Home / 750,805.35-1,036,128.11-428,508.96

Finding the Fourth Proportional to 750,805.35, 1,036,128.11 and 428,508.96

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Solution

The fourth proportional to 750,805.35, 1,036,128.11 and 428,508.96 is: 591,351.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    750,805.35 : 1,036,128.11 = 428,508.96 : x
  2. Step 2: Convert to fraction form
    750,805.35/1,036,128.11 = 428,508.96/x
  3. Step 3: Cross multiply
    750,805.35x = 1,036,128.11 × 428,508.96
  4. Step 4: Simplify right side
    750,805.35x = 443,990,176,700.32
  5. Step 5: Solve for x
    x = 443,990,176,700.32/750,805.35
  6. Step 6: Final answer
    x = 591,351.91

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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.