Home / 919,368.90-1,379,053.35-288,200.70

Finding the Fourth Proportional to 919,368.90, 1,379,053.35 and 288,200.70

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Solution

The fourth proportional to 919,368.90, 1,379,053.35 and 288,200.70 is: 432,301.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    919,368.90 : 1,379,053.35 = 288,200.70 : x
  2. Step 2: Convert to fraction form
    919,368.90/1,379,053.35 = 288,200.70/x
  3. Step 3: Cross multiply
    919,368.90x = 1,379,053.35 × 288,200.70
  4. Step 4: Simplify right side
    919,368.90x = 397,444,140,807.35
  5. Step 5: Solve for x
    x = 397,444,140,807.35/919,368.90
  6. Step 6: Final answer
    x = 432,301.05

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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.