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Finding the Fourth Proportional to 520,380.80, 717,862.50 and 348,305.96

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Solution

The fourth proportional to 520,380.80, 717,862.50 and 348,305.96 is: 480,486.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    520,380.80 : 717,862.50 = 348,305.96 : x
  2. Step 2: Convert to fraction form
    520,380.80/717,862.50 = 348,305.96/x
  3. Step 3: Cross multiply
    520,380.80x = 717,862.50 × 348,305.96
  4. Step 4: Simplify right side
    520,380.80x = 250,035,787,210.50
  5. Step 5: Solve for x
    x = 250,035,787,210.50/520,380.80
  6. Step 6: Final answer
    x = 480,486.19

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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.