Home / 1,142,712.36-1,714,430.61-687,801.78

Finding the Fourth Proportional to 1,142,712.36, 1,714,430.61 and 687,801.78

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Solution

The fourth proportional to 1,142,712.36, 1,714,430.61 and 687,801.78 is: 1,031,920.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,142,712.36 : 1,714,430.61 = 687,801.78 : x
  2. Step 2: Convert to fraction form
    1,142,712.36/1,714,430.61 = 687,801.78/x
  3. Step 3: Cross multiply
    1,142,712.36x = 1,714,430.61 × 687,801.78
  4. Step 4: Simplify right side
    1,142,712.36x = 1,179,188,425,244.49
  5. Step 5: Solve for x
    x = 1,179,188,425,244.49/1,142,712.36
  6. Step 6: Final answer
    x = 1,031,920.60

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.