Home / 515,812,158-711,817,747.20-280,862,257.68

Finding the Fourth Proportional to 515,812,158, 711,817,747.20 and 280,862,257.68

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Solution

The fourth proportional to 515,812,158, 711,817,747.20 and 280,862,257.68 is: 387,588,265.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    515,812,158 : 711,817,747.20 = 280,862,257.68 : x
  2. Step 2: Convert to fraction form
    515,812,158/711,817,747.20 = 280,862,257.68/x
  3. Step 3: Cross multiply
    515,812,158x = 711,817,747.20 × 280,862,257.68
  4. Step 4: Simplify right side
    515,812,158x = 199,922,739,535,283,520
  5. Step 5: Solve for x
    x = 199,922,739,535,283,520/515,812,158
  6. Step 6: Final answer
    x = 387,588,265.29

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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.