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Finding the Fourth Proportional to 527,082.40, 788,809.20 and 316,871.20

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Solution

The fourth proportional to 527,082.40, 788,809.20 and 316,871.20 is: 474,216.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    527,082.40 : 788,809.20 = 316,871.20 : x
  2. Step 2: Convert to fraction form
    527,082.40/788,809.20 = 316,871.20/x
  3. Step 3: Cross multiply
    527,082.40x = 788,809.20 × 316,871.20
  4. Step 4: Simplify right side
    527,082.40x = 249,950,917,775.04
  5. Step 5: Solve for x
    x = 249,950,917,775.04/527,082.40
  6. Step 6: Final answer
    x = 474,216.02

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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.