Home / 1,247,429.57-1,721,059.85-763,490.21

Finding the Fourth Proportional to 1,247,429.57, 1,721,059.85 and 763,490.21

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Solution

The fourth proportional to 1,247,429.57, 1,721,059.85 and 763,490.21 is: 1,053,375.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,247,429.57 : 1,721,059.85 = 763,490.21 : x
  2. Step 2: Convert to fraction form
    1,247,429.57/1,721,059.85 = 763,490.21/x
  3. Step 3: Cross multiply
    1,247,429.57x = 1,721,059.85 × 763,490.21
  4. Step 4: Simplify right side
    1,247,429.57x = 1,314,012,339,602.49
  5. Step 5: Solve for x
    x = 1,314,012,339,602.49/1,247,429.57
  6. Step 6: Final answer
    x = 1,053,375.98

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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.