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Finding the Fourth Proportional to 676,801.48, 934,084.02 and 390,264.52

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Solution

The fourth proportional to 676,801.48, 934,084.02 and 390,264.52 is: 538,621.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    676,801.48 : 934,084.02 = 390,264.52 : x
  2. Step 2: Convert to fraction form
    676,801.48/934,084.02 = 390,264.52/x
  3. Step 3: Cross multiply
    676,801.48x = 934,084.02 × 390,264.52
  4. Step 4: Simplify right side
    676,801.48x = 364,539,851,704.97
  5. Step 5: Solve for x
    x = 364,539,851,704.97/676,801.48
  6. Step 6: Final answer
    x = 538,621.53

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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.