Home / 497,731.60-746,597.40-320,438.80

Finding the Fourth Proportional to 497,731.60, 746,597.40 and 320,438.80

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Solution

The fourth proportional to 497,731.60, 746,597.40 and 320,438.80 is: 480,658.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    497,731.60 : 746,597.40 = 320,438.80 : x
  2. Step 2: Convert to fraction form
    497,731.60/746,597.40 = 320,438.80/x
  3. Step 3: Cross multiply
    497,731.60x = 746,597.40 × 320,438.80
  4. Step 4: Simplify right side
    497,731.60x = 239,238,774,939.12
  5. Step 5: Solve for x
    x = 239,238,774,939.12/497,731.60
  6. Step 6: Final answer
    x = 480,658.20

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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.