Home / 1,260,879.12-1,740,018.96-687,931.20

Finding the Fourth Proportional to 1,260,879.12, 1,740,018.96 and 687,931.20

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Solution

The fourth proportional to 1,260,879.12, 1,740,018.96 and 687,931.20 is: 949,348.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,260,879.12 : 1,740,018.96 = 687,931.20 : x
  2. Step 2: Convert to fraction form
    1,260,879.12/1,740,018.96 = 687,931.20/x
  3. Step 3: Cross multiply
    1,260,879.12x = 1,740,018.96 × 687,931.20
  4. Step 4: Simplify right side
    1,260,879.12x = 1,197,013,331,175.55
  5. Step 5: Solve for x
    x = 1,197,013,331,175.55/1,260,879.12
  6. Step 6: Final answer
    x = 949,348.21

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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.