Home / 1,248,076.80-1,872,921.60-687,513.60

Finding the Fourth Proportional to 1,248,076.80, 1,872,921.60 and 687,513.60

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Solution

The fourth proportional to 1,248,076.80, 1,872,921.60 and 687,513.60 is: 1,031,714.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,248,076.80 : 1,872,921.60 = 687,513.60 : x
  2. Step 2: Convert to fraction form
    1,248,076.80/1,872,921.60 = 687,513.60/x
  3. Step 3: Cross multiply
    1,248,076.80x = 1,872,921.60 × 687,513.60
  4. Step 4: Simplify right side
    1,248,076.80x = 1,287,659,071,733.76
  5. Step 5: Solve for x
    x = 1,287,659,071,733.76/1,248,076.80
  6. Step 6: Final answer
    x = 1,031,714.61

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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.