Home / 1,290,816,192.80-1,936,224,289.20-417,415,872.80

Finding the Fourth Proportional to 1,290,816,192.80, 1,936,224,289.20 and 417,415,872.80

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Solution

The fourth proportional to 1,290,816,192.80, 1,936,224,289.20 and 417,415,872.80 is: 626,123,809.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,290,816,192.80 : 1,936,224,289.20 = 417,415,872.80 : x
  2. Step 2: Convert to fraction form
    1,290,816,192.80/1,936,224,289.20 = 417,415,872.80/x
  3. Step 3: Cross multiply
    1,290,816,192.80x = 1,936,224,289.20 × 417,415,872.80
  4. Step 4: Simplify right side
    1,290,816,192.80x = 808,210,751,612,977,664
  5. Step 5: Solve for x
    x = 808,210,751,612,977,664/1,290,816,192.80
  6. Step 6: Final answer
    x = 626,123,809.20

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Half scale
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Double scale
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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.