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Finding the Fourth Proportional to 647,252.20, 904,972.10 and 647,252.20

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Solution

The fourth proportional to 647,252.20, 904,972.10 and 647,252.20 is: 904,972.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    647,252.20 : 904,972.10 = 647,252.20 : x
  2. Step 2: Convert to fraction form
    647,252.20/904,972.10 = 647,252.20/x
  3. Step 3: Cross multiply
    647,252.20x = 904,972.10 × 647,252.20
  4. Step 4: Simplify right side
    647,252.20x = 585,745,182,663.62
  5. Step 5: Solve for x
    x = 585,745,182,663.62/647,252.20
  6. Step 6: Final answer
    x = 904,972.10

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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.