Home / 638,711.28-881,404.20-352,226.16

Finding the Fourth Proportional to 638,711.28, 881,404.20 and 352,226.16

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Solution

The fourth proportional to 638,711.28, 881,404.20 and 352,226.16 is: 486,062.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,711.28 : 881,404.20 = 352,226.16 : x
  2. Step 2: Convert to fraction form
    638,711.28/881,404.20 = 352,226.16/x
  3. Step 3: Cross multiply
    638,711.28x = 881,404.20 × 352,226.16
  4. Step 4: Simplify right side
    638,711.28x = 310,453,616,773.87
  5. Step 5: Solve for x
    x = 310,453,616,773.87/638,711.28
  6. Step 6: Final answer
    x = 486,062.52

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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.