Home / 777,781.45-1,073,402.33-428,990.18

Finding the Fourth Proportional to 777,781.45, 1,073,402.33 and 428,990.18

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Solution

The fourth proportional to 777,781.45, 1,073,402.33 and 428,990.18 is: 592,041.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    777,781.45 : 1,073,402.33 = 428,990.18 : x
  2. Step 2: Convert to fraction form
    777,781.45/1,073,402.33 = 428,990.18/x
  3. Step 3: Cross multiply
    777,781.45x = 1,073,402.33 × 428,990.18
  4. Step 4: Simplify right side
    777,781.45x = 460,479,057,285.05
  5. Step 5: Solve for x
    x = 460,479,057,285.05/777,781.45
  6. Step 6: Final answer
    x = 592,041.71

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1.5x scale

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.