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Finding the Fourth Proportional to 670,120.32, 924,818.88 and 383,730.56

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Solution

The fourth proportional to 670,120.32, 924,818.88 and 383,730.56 is: 529,578.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    670,120.32 : 924,818.88 = 383,730.56 : x
  2. Step 2: Convert to fraction form
    670,120.32/924,818.88 = 383,730.56/x
  3. Step 3: Cross multiply
    670,120.32x = 924,818.88 × 383,730.56
  4. Step 4: Simplify right side
    670,120.32x = 354,881,266,720.97
  5. Step 5: Solve for x
    x = 354,881,266,720.97/670,120.32
  6. Step 6: Final answer
    x = 529,578.43

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.