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Finding the Fourth Proportional to 891,661.60, 1,337,686.80 and 292,520.80

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Solution

The fourth proportional to 891,661.60, 1,337,686.80 and 292,520.80 is: 438,844.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    891,661.60 : 1,337,686.80 = 292,520.80 : x
  2. Step 2: Convert to fraction form
    891,661.60/1,337,686.80 = 292,520.80/x
  3. Step 3: Cross multiply
    891,661.60x = 1,337,686.80 × 292,520.80
  4. Step 4: Simplify right side
    891,661.60x = 391,301,212,885.44
  5. Step 5: Solve for x
    x = 391,301,212,885.44/891,661.60
  6. Step 6: Final answer
    x = 438,844.98

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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.