Home / 480,698.20-721,047.30-403,715.80

Finding the Fourth Proportional to 480,698.20, 721,047.30 and 403,715.80

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Solution

The fourth proportional to 480,698.20, 721,047.30 and 403,715.80 is: 605,573.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    480,698.20 : 721,047.30 = 403,715.80 : x
  2. Step 2: Convert to fraction form
    480,698.20/721,047.30 = 403,715.80/x
  3. Step 3: Cross multiply
    480,698.20x = 721,047.30 × 403,715.80
  4. Step 4: Simplify right side
    480,698.20x = 291,098,187,557.34
  5. Step 5: Solve for x
    x = 291,098,187,557.34/480,698.20
  6. Step 6: Final answer
    x = 605,573.70

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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.