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Finding the Fourth Proportional to 495,117.60, 742,676.40 and 317,824.80

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Solution

The fourth proportional to 495,117.60, 742,676.40 and 317,824.80 is: 476,737.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    495,117.60 : 742,676.40 = 317,824.80 : x
  2. Step 2: Convert to fraction form
    495,117.60/742,676.40 = 317,824.80/x
  3. Step 3: Cross multiply
    495,117.60x = 742,676.40 × 317,824.80
  4. Step 4: Simplify right side
    495,117.60x = 236,040,978,294.72
  5. Step 5: Solve for x
    x = 236,040,978,294.72/495,117.60
  6. Step 6: Final answer
    x = 476,737.20

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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.