Home / 437,528.20-656,438.10-390,494.20

Finding the Fourth Proportional to 437,528.20, 656,438.10 and 390,494.20

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Solution

The fourth proportional to 437,528.20, 656,438.10 and 390,494.20 is: 585,871.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    437,528.20 : 656,438.10 = 390,494.20 : x
  2. Step 2: Convert to fraction form
    437,528.20/656,438.10 = 390,494.20/x
  3. Step 3: Cross multiply
    437,528.20x = 656,438.10 × 390,494.20
  4. Step 4: Simplify right side
    437,528.20x = 256,335,270,709.02
  5. Step 5: Solve for x
    x = 256,335,270,709.02/437,528.20
  6. Step 6: Final answer
    x = 585,871.43

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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.