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Finding the Fourth Proportional to 647,251.20, 904,970.70 and 647,251.20

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Solution

The fourth proportional to 647,251.20, 904,970.70 and 647,251.20 is: 904,970.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    647,251.20 : 904,970.70 = 647,251.20 : x
  2. Step 2: Convert to fraction form
    647,251.20/904,970.70 = 647,251.20/x
  3. Step 3: Cross multiply
    647,251.20x = 904,970.70 × 647,251.20
  4. Step 4: Simplify right side
    647,251.20x = 585,743,371,539.84
  5. Step 5: Solve for x
    x = 585,743,371,539.84/647,251.20
  6. Step 6: Final answer
    x = 904,970.70

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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.