Home / 680,731.80-1,021,728.12-344,009.40

Finding the Fourth Proportional to 680,731.80, 1,021,728.12 and 344,009.40

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Solution

The fourth proportional to 680,731.80, 1,021,728.12 and 344,009.40 is: 516,332.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    680,731.80 : 1,021,728.12 = 344,009.40 : x
  2. Step 2: Convert to fraction form
    680,731.80/1,021,728.12 = 344,009.40/x
  3. Step 3: Cross multiply
    680,731.80x = 1,021,728.12 × 344,009.40
  4. Step 4: Simplify right side
    680,731.80x = 351,484,077,524.33
  5. Step 5: Solve for x
    x = 351,484,077,524.33/680,731.80
  6. Step 6: Final answer
    x = 516,332.68

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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.