Home / 1,127,339.80-1,687,073.10-788,792.20

Finding the Fourth Proportional to 1,127,339.80, 1,687,073.10 and 788,792.20

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Solution

The fourth proportional to 1,127,339.80, 1,687,073.10 and 788,792.20 is: 1,180,433.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,127,339.80 : 1,687,073.10 = 788,792.20 : x
  2. Step 2: Convert to fraction form
    1,127,339.80/1,687,073.10 = 788,792.20/x
  3. Step 3: Cross multiply
    1,127,339.80x = 1,687,073.10 × 788,792.20
  4. Step 4: Simplify right side
    1,127,339.80x = 1,330,750,102,109.82
  5. Step 5: Solve for x
    x = 1,330,750,102,109.82/1,127,339.80
  6. Step 6: Final answer
    x = 1,180,433.89

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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.