Home / 1,224,712.40-1,690,131.30-680,827.28

Finding the Fourth Proportional to 1,224,712.40, 1,690,131.30 and 680,827.28

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Solution

The fourth proportional to 1,224,712.40, 1,690,131.30 and 680,827.28 is: 939,557.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,224,712.40 : 1,690,131.30 = 680,827.28 : x
  2. Step 2: Convert to fraction form
    1,224,712.40/1,690,131.30 = 680,827.28/x
  3. Step 3: Cross multiply
    1,224,712.40x = 1,690,131.30 × 680,827.28
  4. Step 4: Simplify right side
    1,224,712.40x = 1,150,687,495,821.86
  5. Step 5: Solve for x
    x = 1,150,687,495,821.86/1,224,712.40
  6. Step 6: Final answer
    x = 939,557.32

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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.