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Finding the Fourth Proportional to 985,978.26, 1,360,532.97 and 556,233.30

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Solution

The fourth proportional to 985,978.26, 1,360,532.97 and 556,233.30 is: 767,535.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    985,978.26 : 1,360,532.97 = 556,233.30 : x
  2. Step 2: Convert to fraction form
    985,978.26/1,360,532.97 = 556,233.30/x
  3. Step 3: Cross multiply
    985,978.26x = 1,360,532.97 × 556,233.30
  4. Step 4: Simplify right side
    985,978.26x = 756,773,743,661.90
  5. Step 5: Solve for x
    x = 756,773,743,661.90/985,978.26
  6. Step 6: Final answer
    x = 767,535.93

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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.