Home / 1,248,428.16-1,871,854.92-687,856.32

Finding the Fourth Proportional to 1,248,428.16, 1,871,854.92 and 687,856.32

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Solution

The fourth proportional to 1,248,428.16, 1,871,854.92 and 687,856.32 is: 1,031,350.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,248,428.16 : 1,871,854.92 = 687,856.32 : x
  2. Step 2: Convert to fraction form
    1,248,428.16/1,871,854.92 = 687,856.32/x
  3. Step 3: Cross multiply
    1,248,428.16x = 1,871,854.92 × 687,856.32
  4. Step 4: Simplify right side
    1,248,428.16x = 1,287,567,236,845.09
  5. Step 5: Solve for x
    x = 1,287,567,236,845.09/1,248,428.16
  6. Step 6: Final answer
    x = 1,031,350.68

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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.