Home / 1,290,689.88-1,781,195.04-709,937.52

Finding the Fourth Proportional to 1,290,689.88, 1,781,195.04 and 709,937.52

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Solution

The fourth proportional to 1,290,689.88, 1,781,195.04 and 709,937.52 is: 979,737.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,290,689.88 : 1,781,195.04 = 709,937.52 : x
  2. Step 2: Convert to fraction form
    1,290,689.88/1,781,195.04 = 709,937.52/x
  3. Step 3: Cross multiply
    1,290,689.88x = 1,781,195.04 × 709,937.52
  4. Step 4: Simplify right side
    1,290,689.88x = 1,264,537,189,333.90
  5. Step 5: Solve for x
    x = 1,264,537,189,333.90/1,290,689.88
  6. Step 6: Final answer
    x = 979,737.43

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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.