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Finding the Fourth Proportional to 676,800.48, 934,082.64 and 390,263.52

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Solution

The fourth proportional to 676,800.48, 934,082.64 and 390,263.52 is: 538,620.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    676,800.48 : 934,082.64 = 390,263.52 : x
  2. Step 2: Convert to fraction form
    676,800.48/934,082.64 = 390,263.52/x
  3. Step 3: Cross multiply
    676,800.48x = 934,082.64 × 390,263.52
  4. Step 4: Simplify right side
    676,800.48x = 364,538,379,057.29
  5. Step 5: Solve for x
    x = 364,538,379,057.29/676,800.48
  6. Step 6: Final answer
    x = 538,620.15

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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.