Home / 1,215,938.64-1,678,001.88-664,655.04

Finding the Fourth Proportional to 1,215,938.64, 1,678,001.88 and 664,655.04

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Solution

The fourth proportional to 1,215,938.64, 1,678,001.88 and 664,655.04 is: 917,227.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,215,938.64 : 1,678,001.88 = 664,655.04 : x
  2. Step 2: Convert to fraction form
    1,215,938.64/1,678,001.88 = 664,655.04/x
  3. Step 3: Cross multiply
    1,215,938.64x = 1,678,001.88 × 664,655.04
  4. Step 4: Simplify right side
    1,215,938.64x = 1,115,292,406,671.48
  5. Step 5: Solve for x
    x = 1,115,292,406,671.48/1,215,938.64
  6. Step 6: Final answer
    x = 917,227.54

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.