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Finding the Fourth Proportional to 520,871.70, 785,211.57 and 486,151.59

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Solution

The fourth proportional to 520,871.70, 785,211.57 and 486,151.59 is: 732,871.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    520,871.70 : 785,211.57 = 486,151.59 : x
  2. Step 2: Convert to fraction form
    520,871.70/785,211.57 = 486,151.59/x
  3. Step 3: Cross multiply
    520,871.70x = 785,211.57 × 486,151.59
  4. Step 4: Simplify right side
    520,871.70x = 381,731,853,241.90
  5. Step 5: Solve for x
    x = 381,731,853,241.90/520,871.70
  6. Step 6: Final answer
    x = 732,871.17

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.