Home / 1,290,314.81-1,778,008.52-998,151.66

Finding the Fourth Proportional to 1,290,314.81, 1,778,008.52 and 998,151.66

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Solution

The fourth proportional to 1,290,314.81, 1,778,008.52 and 998,151.66 is: 1,375,417.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,290,314.81 : 1,778,008.52 = 998,151.66 : x
  2. Step 2: Convert to fraction form
    1,290,314.81/1,778,008.52 = 998,151.66/x
  3. Step 3: Cross multiply
    1,290,314.81x = 1,778,008.52 × 998,151.66
  4. Step 4: Simplify right side
    1,290,314.81x = 1,774,722,158,227.52
  5. Step 5: Solve for x
    x = 1,774,722,158,227.52/1,290,314.81
  6. Step 6: Final answer
    x = 1,375,417.95

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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.