Home / 437,926.08-656,031.20-390,320.32

Finding the Fourth Proportional to 437,926.08, 656,031.20 and 390,320.32

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Solution

The fourth proportional to 437,926.08, 656,031.20 and 390,320.32 is: 584,715.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    437,926.08 : 656,031.20 = 390,320.32 : x
  2. Step 2: Convert to fraction form
    437,926.08/656,031.20 = 390,320.32/x
  3. Step 3: Cross multiply
    437,926.08x = 656,031.20 × 390,320.32
  4. Step 4: Simplify right side
    437,926.08x = 256,062,307,913.98
  5. Step 5: Solve for x
    x = 256,062,307,913.98/437,926.08
  6. Step 6: Final answer
    x = 584,715.82

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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.