Home / 1,290,944.16-1,932,275.52-690,403.68

Finding the Fourth Proportional to 1,290,944.16, 1,932,275.52 and 690,403.68

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Solution

The fourth proportional to 1,290,944.16, 1,932,275.52 and 690,403.68 is: 1,033,391.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,290,944.16 : 1,932,275.52 = 690,403.68 : x
  2. Step 2: Convert to fraction form
    1,290,944.16/1,932,275.52 = 690,403.68/x
  3. Step 3: Cross multiply
    1,290,944.16x = 1,932,275.52 × 690,403.68
  4. Step 4: Simplify right side
    1,290,944.16x = 1,334,050,129,781.91
  5. Step 5: Solve for x
    x = 1,334,050,129,781.91/1,290,944.16
  6. Step 6: Final answer
    x = 1,033,391.04

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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.