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Finding the Fourth Proportional to 485,987.60, 728,981.40 and 333,772.40

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Solution

The fourth proportional to 485,987.60, 728,981.40 and 333,772.40 is: 500,658.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    485,987.60 : 728,981.40 = 333,772.40 : x
  2. Step 2: Convert to fraction form
    485,987.60/728,981.40 = 333,772.40/x
  3. Step 3: Cross multiply
    485,987.60x = 728,981.40 × 333,772.40
  4. Step 4: Simplify right side
    485,987.60x = 243,313,871,433.36
  5. Step 5: Solve for x
    x = 243,313,871,433.36/485,987.60
  6. Step 6: Final answer
    x = 500,658.60

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Similar ratio
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1.5x scale

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.