Home / 766,918.20-1,149,065.10-486,107.40

Finding the Fourth Proportional to 766,918.20, 1,149,065.10 and 486,107.40

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Solution

The fourth proportional to 766,918.20, 1,149,065.10 and 486,107.40 is: 728,329.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    766,918.20 : 1,149,065.10 = 486,107.40 : x
  2. Step 2: Convert to fraction form
    766,918.20/1,149,065.10 = 486,107.40/x
  3. Step 3: Cross multiply
    766,918.20x = 1,149,065.10 × 486,107.40
  4. Step 4: Simplify right side
    766,918.20x = 558,569,048,191.74
  5. Step 5: Solve for x
    x = 558,569,048,191.74/766,918.20
  6. Step 6: Final answer
    x = 728,329.37

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Double scale
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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.