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Finding the Fourth Proportional to 615,920.76, 924,173.55 and 426,672.36

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Solution

The fourth proportional to 615,920.76, 924,173.55 and 426,672.36 is: 640,211.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    615,920.76 : 924,173.55 = 426,672.36 : x
  2. Step 2: Convert to fraction form
    615,920.76/924,173.55 = 426,672.36/x
  3. Step 3: Cross multiply
    615,920.76x = 924,173.55 × 426,672.36
  4. Step 4: Simplify right side
    615,920.76x = 394,319,309,628.08
  5. Step 5: Solve for x
    x = 394,319,309,628.08/615,920.76
  6. Step 6: Final answer
    x = 640,211.10

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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.