Home / 1,247,355.18-1,721,617.20-788,178.24

Finding the Fourth Proportional to 1,247,355.18, 1,721,617.20 and 788,178.24

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Solution

The fourth proportional to 1,247,355.18, 1,721,617.20 and 788,178.24 is: 1,087,854.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,247,355.18 : 1,721,617.20 = 788,178.24 : x
  2. Step 2: Convert to fraction form
    1,247,355.18/1,721,617.20 = 788,178.24/x
  3. Step 3: Cross multiply
    1,247,355.18x = 1,721,617.20 × 788,178.24
  4. Step 4: Simplify right side
    1,247,355.18x = 1,356,941,214,649.73
  5. Step 5: Solve for x
    x = 1,356,941,214,649.73/1,247,355.18
  6. Step 6: Final answer
    x = 1,087,854.72

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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.