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Finding the Fourth Proportional to 557,414.92, 769,279.98 and 315,740.62

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Solution

The fourth proportional to 557,414.92, 769,279.98 and 315,740.62 is: 435,748.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    557,414.92 : 769,279.98 = 315,740.62 : x
  2. Step 2: Convert to fraction form
    557,414.92/769,279.98 = 315,740.62/x
  3. Step 3: Cross multiply
    557,414.92x = 769,279.98 × 315,740.62
  4. Step 4: Simplify right side
    557,414.92x = 242,892,937,838.79
  5. Step 5: Solve for x
    x = 242,892,937,838.79/557,414.92
  6. Step 6: Final answer
    x = 435,748.90

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1.5x scale

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.