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Finding the Fourth Proportional to 487,541.20, 729,999.60 and 487,541.20

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Solution

The fourth proportional to 487,541.20, 729,999.60 and 487,541.20 is: 729,999.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    487,541.20 : 729,999.60 = 487,541.20 : x
  2. Step 2: Convert to fraction form
    487,541.20/729,999.60 = 487,541.20/x
  3. Step 3: Cross multiply
    487,541.20x = 729,999.60 × 487,541.20
  4. Step 4: Simplify right side
    487,541.20x = 355,904,880,983.52
  5. Step 5: Solve for x
    x = 355,904,880,983.52/487,541.20
  6. Step 6: Final answer
    x = 729,999.60

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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.