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Finding the Fourth Proportional to 620,483.91, 931,513.38 and 527,580.15

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Solution

The fourth proportional to 620,483.91, 931,513.38 and 527,580.15 is: 792,039.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    620,483.91 : 931,513.38 = 527,580.15 : x
  2. Step 2: Convert to fraction form
    620,483.91/931,513.38 = 527,580.15/x
  3. Step 3: Cross multiply
    620,483.91x = 931,513.38 × 527,580.15
  4. Step 4: Simplify right side
    620,483.91x = 491,447,968,747.41
  5. Step 5: Solve for x
    x = 491,447,968,747.41/620,483.91
  6. Step 6: Final answer
    x = 792,039.83

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.