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Finding the Fourth Proportional to 527,079.90, 788,805.45 and 316,868.70

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Solution

The fourth proportional to 527,079.90, 788,805.45 and 316,868.70 is: 474,212.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    527,079.90 : 788,805.45 = 316,868.70 : x
  2. Step 2: Convert to fraction form
    527,079.90/788,805.45 = 316,868.70/x
  3. Step 3: Cross multiply
    527,079.90x = 788,805.45 × 316,868.70
  4. Step 4: Simplify right side
    527,079.90x = 249,947,757,494.42
  5. Step 5: Solve for x
    x = 249,947,757,494.42/527,079.90
  6. Step 6: Final answer
    x = 474,212.27

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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.