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Finding the Fourth Proportional to 676,707.60, 933,791.40 and 404,720.40

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Solution

The fourth proportional to 676,707.60, 933,791.40 and 404,720.40 is: 558,475.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    676,707.60 : 933,791.40 = 404,720.40 : x
  2. Step 2: Convert to fraction form
    676,707.60/933,791.40 = 404,720.40/x
  3. Step 3: Cross multiply
    676,707.60x = 933,791.40 × 404,720.40
  4. Step 4: Simplify right side
    676,707.60x = 377,924,428,924.56
  5. Step 5: Solve for x
    x = 377,924,428,924.56/676,707.60
  6. Step 6: Final answer
    x = 558,475.22

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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.