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Finding the Fourth Proportional to 487,280.80, 730,921.20 and 443,735.20

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Solution

The fourth proportional to 487,280.80, 730,921.20 and 443,735.20 is: 665,602.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    487,280.80 : 730,921.20 = 443,735.20 : x
  2. Step 2: Convert to fraction form
    487,280.80/730,921.20 = 443,735.20/x
  3. Step 3: Cross multiply
    487,280.80x = 730,921.20 × 443,735.20
  4. Step 4: Simplify right side
    487,280.80x = 324,335,464,866.24
  5. Step 5: Solve for x
    x = 324,335,464,866.24/487,280.80
  6. Step 6: Final answer
    x = 665,602.80

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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.