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Finding the Fourth Proportional to 609,126.76, 913,671.12 and 289,508.72

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Solution

The fourth proportional to 609,126.76, 913,671.12 and 289,508.72 is: 434,254.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    609,126.76 : 913,671.12 = 289,508.72 : x
  2. Step 2: Convert to fraction form
    609,126.76/913,671.12 = 289,508.72/x
  3. Step 3: Cross multiply
    609,126.76x = 913,671.12 × 289,508.72
  4. Step 4: Simplify right side
    609,126.76x = 264,515,756,452.17
  5. Step 5: Solve for x
    x = 264,515,756,452.17/609,126.76
  6. Step 6: Final answer
    x = 434,254.04

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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.