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Finding the Fourth Proportional to 520,381.80, 717,863.88 and 348,306.96

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Solution

The fourth proportional to 520,381.80, 717,863.88 and 348,306.96 is: 480,487.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    520,381.80 : 717,863.88 = 348,306.96 : x
  2. Step 2: Convert to fraction form
    520,381.80/717,863.88 = 348,306.96/x
  3. Step 3: Cross multiply
    520,381.80x = 717,863.88 × 348,306.96
  4. Step 4: Simplify right side
    520,381.80x = 250,036,985,736.61
  5. Step 5: Solve for x
    x = 250,036,985,736.61/520,381.80
  6. Step 6: Final answer
    x = 480,487.57

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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.