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Finding the Fourth Proportional to 520,099.10, 779,565.45 and 267,281.90

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Solution

The fourth proportional to 520,099.10, 779,565.45 and 267,281.90 is: 400,623.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    520,099.10 : 779,565.45 = 267,281.90 : x
  2. Step 2: Convert to fraction form
    520,099.10/779,565.45 = 267,281.90/x
  3. Step 3: Cross multiply
    520,099.10x = 779,565.45 × 267,281.90
  4. Step 4: Simplify right side
    520,099.10x = 208,363,734,650.36
  5. Step 5: Solve for x
    x = 208,363,734,650.36/520,099.10
  6. Step 6: Final answer
    x = 400,623.14

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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.