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Finding the Fourth Proportional to 572,494.70, 858,007.65 and 319,774.70

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Solution

The fourth proportional to 572,494.70, 858,007.65 and 319,774.70 is: 479,251.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    572,494.70 : 858,007.65 = 319,774.70 : x
  2. Step 2: Convert to fraction form
    572,494.70/858,007.65 = 319,774.70/x
  3. Step 3: Cross multiply
    572,494.70x = 858,007.65 × 319,774.70
  4. Step 4: Simplify right side
    572,494.70x = 274,369,138,876.46
  5. Step 5: Solve for x
    x = 274,369,138,876.46/572,494.70
  6. Step 6: Final answer
    x = 479,251.84

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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.