Home / 1,189,224-1,641,130.18-645,359.80

Finding the Fourth Proportional to 1,189,224, 1,641,130.18 and 645,359.80

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Solution

The fourth proportional to 1,189,224, 1,641,130.18 and 645,359.80 is: 890,597.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,189,224 : 1,641,130.18 = 645,359.80 : x
  2. Step 2: Convert to fraction form
    1,189,224/1,641,130.18 = 645,359.80/x
  3. Step 3: Cross multiply
    1,189,224x = 1,641,130.18 × 645,359.80
  4. Step 4: Simplify right side
    1,189,224x = 1,059,119,444,738.76
  5. Step 5: Solve for x
    x = 1,059,119,444,738.76/1,189,224
  6. Step 6: Final answer
    x = 890,597.10

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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 (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.