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Finding the Fourth Proportional to 648,001.45, 908,135.15 and 648,001.45

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Solution

The fourth proportional to 648,001.45, 908,135.15 and 648,001.45 is: 908,135.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    648,001.45 : 908,135.15 = 648,001.45 : x
  2. Step 2: Convert to fraction form
    648,001.45/908,135.15 = 648,001.45/x
  3. Step 3: Cross multiply
    648,001.45x = 908,135.15 × 648,001.45
  4. Step 4: Simplify right side
    648,001.45x = 588,472,893,995.97
  5. Step 5: Solve for x
    x = 588,472,893,995.97/648,001.45
  6. Step 6: Final answer
    x = 908,135.15

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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.