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Finding the Fourth Proportional to 524,851.20, 787,276.80 and 288,655.20

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Solution

The fourth proportional to 524,851.20, 787,276.80 and 288,655.20 is: 432,982.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    524,851.20 : 787,276.80 = 288,655.20 : x
  2. Step 2: Convert to fraction form
    524,851.20/787,276.80 = 288,655.20/x
  3. Step 3: Cross multiply
    524,851.20x = 787,276.80 × 288,655.20
  4. Step 4: Simplify right side
    524,851.20x = 227,251,542,159.36
  5. Step 5: Solve for x
    x = 227,251,542,159.36/524,851.20
  6. Step 6: Final answer
    x = 432,982.80

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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.