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Finding the Fourth Proportional to 487,532.20, 729,986.10 and 487,532.20

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Solution

The fourth proportional to 487,532.20, 729,986.10 and 487,532.20 is: 729,986.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    487,532.20 : 729,986.10 = 487,532.20 : x
  2. Step 2: Convert to fraction form
    487,532.20/729,986.10 = 487,532.20/x
  3. Step 3: Cross multiply
    487,532.20x = 729,986.10 × 487,532.20
  4. Step 4: Simplify right side
    487,532.20x = 355,891,729,302.42
  5. Step 5: Solve for x
    x = 355,891,729,302.42/487,532.20
  6. Step 6: Final answer
    x = 729,986.10

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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.