Home / 1,200,397.84-1,656,487.60-656,427.90

Finding the Fourth Proportional to 1,200,397.84, 1,656,487.60 and 656,427.90

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Solution

The fourth proportional to 1,200,397.84, 1,656,487.60 and 656,427.90 is: 905,836.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,200,397.84 : 1,656,487.60 = 656,427.90 : x
  2. Step 2: Convert to fraction form
    1,200,397.84/1,656,487.60 = 656,427.90/x
  3. Step 3: Cross multiply
    1,200,397.84x = 1,656,487.60 × 656,427.90
  4. Step 4: Simplify right side
    1,200,397.84x = 1,087,364,676,644.04
  5. Step 5: Solve for x
    x = 1,087,364,676,644.04/1,200,397.84
  6. Step 6: Final answer
    x = 905,836.92

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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.