Home / 1,438,624-1,985,301.12-802,720

Finding the Fourth Proportional to 1,438,624, 1,985,301.12 and 802,720

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Solution

The fourth proportional to 1,438,624, 1,985,301.12 and 802,720 is: 1,107,753.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,438,624 : 1,985,301.12 = 802,720 : x
  2. Step 2: Convert to fraction form
    1,438,624/1,985,301.12 = 802,720/x
  3. Step 3: Cross multiply
    1,438,624x = 1,985,301.12 × 802,720
  4. Step 4: Simplify right side
    1,438,624x = 1,593,640,915,046.40
  5. Step 5: Solve for x
    x = 1,593,640,915,046.40/1,438,624
  6. Step 6: Final answer
    x = 1,107,753.60

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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.