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Finding the Fourth Proportional to 520,045.10, 779,484.45 and 267,227.90

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Solution

The fourth proportional to 520,045.10, 779,484.45 and 267,227.90 is: 400,542.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    520,045.10 : 779,484.45 = 267,227.90 : x
  2. Step 2: Convert to fraction form
    520,045.10/779,484.45 = 267,227.90/x
  3. Step 3: Cross multiply
    520,045.10x = 779,484.45 × 267,227.90
  4. Step 4: Simplify right side
    520,045.10x = 208,299,992,656.16
  5. Step 5: Solve for x
    x = 208,299,992,656.16/520,045.10
  6. Step 6: Final answer
    x = 400,542.17

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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.