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Finding the Fourth Proportional to 676,655.52, 933,884.04 and 390,119.52

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Solution

The fourth proportional to 676,655.52, 933,884.04 and 390,119.52 is: 538,422.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    676,655.52 : 933,884.04 = 390,119.52 : x
  2. Step 2: Convert to fraction form
    676,655.52/933,884.04 = 390,119.52/x
  3. Step 3: Cross multiply
    676,655.52x = 933,884.04 × 390,119.52
  4. Step 4: Simplify right side
    676,655.52x = 364,326,393,420.46
  5. Step 5: Solve for x
    x = 364,326,393,420.46/676,655.52
  6. Step 6: Final answer
    x = 538,422.26

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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.