Home / 690,780.35-1,036,170.53-410,153.15

Finding the Fourth Proportional to 690,780.35, 1,036,170.53 and 410,153.15

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Solution

The fourth proportional to 690,780.35, 1,036,170.53 and 410,153.15 is: 615,229.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    690,780.35 : 1,036,170.53 = 410,153.15 : x
  2. Step 2: Convert to fraction form
    690,780.35/1,036,170.53 = 410,153.15/x
  3. Step 3: Cross multiply
    690,780.35x = 1,036,170.53 × 410,153.15
  4. Step 4: Simplify right side
    690,780.35x = 424,988,606,816.67
  5. Step 5: Solve for x
    x = 424,988,606,816.67/690,780.35
  6. Step 6: Final answer
    x = 615,229.73

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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.