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Finding the Fourth Proportional to 402,495.20, 603,742.80 and 372,082.40

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Solution

The fourth proportional to 402,495.20, 603,742.80 and 372,082.40 is: 558,123.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    402,495.20 : 603,742.80 = 372,082.40 : x
  2. Step 2: Convert to fraction form
    402,495.20/603,742.80 = 372,082.40/x
  3. Step 3: Cross multiply
    402,495.20x = 603,742.80 × 372,082.40
  4. Step 4: Simplify right side
    402,495.20x = 224,642,070,006.72
  5. Step 5: Solve for x
    x = 224,642,070,006.72/402,495.20
  6. Step 6: Final answer
    x = 558,123.60

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