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Finding the Fourth Proportional to 1,245,871.67, 1,719,318.98 and 736,569.59

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Solution

The fourth proportional to 1,245,871.67, 1,719,318.98 and 736,569.59 is: 1,016,475.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,245,871.67 : 1,719,318.98 = 736,569.59 : x
  2. Step 2: Convert to fraction form
    1,245,871.67/1,719,318.98 = 736,569.59/x
  3. Step 3: Cross multiply
    1,245,871.67x = 1,719,318.98 × 736,569.59
  4. Step 4: Simplify right side
    1,245,871.67x = 1,266,398,072,494.97
  5. Step 5: Solve for x
    x = 1,266,398,072,494.97/1,245,871.67
  6. Step 6: Final answer
    x = 1,016,475.54

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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.