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Finding the Fourth Proportional to 521,646.55, 781,940.47 and 296,541.85

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Solution

The fourth proportional to 521,646.55, 781,940.47 and 296,541.85 is: 444,511.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    521,646.55 : 781,940.47 = 296,541.85 : x
  2. Step 2: Convert to fraction form
    521,646.55/781,940.47 = 296,541.85/x
  3. Step 3: Cross multiply
    521,646.55x = 781,940.47 × 296,541.85
  4. Step 4: Simplify right side
    521,646.55x = 231,878,073,563.67
  5. Step 5: Solve for x
    x = 231,878,073,563.67/521,646.55
  6. Step 6: Final answer
    x = 444,511.85

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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.