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Finding the Fourth Proportional to 495,892.80, 745,394.40 and 486,561.60

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Solution

The fourth proportional to 495,892.80, 745,394.40 and 486,561.60 is: 731,368.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    495,892.80 : 745,394.40 = 486,561.60 : x
  2. Step 2: Convert to fraction form
    495,892.80/745,394.40 = 486,561.60/x
  3. Step 3: Cross multiply
    495,892.80x = 745,394.40 × 486,561.60
  4. Step 4: Simplify right side
    495,892.80x = 362,680,291,895.04
  5. Step 5: Solve for x
    x = 362,680,291,895.04/495,892.80
  6. Step 6: Final answer
    x = 731,368.34

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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.