Home / 782,115.75-1,079,319.74-424,419.75

Finding the Fourth Proportional to 782,115.75, 1,079,319.74 and 424,419.75

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Solution

The fourth proportional to 782,115.75, 1,079,319.74 and 424,419.75 is: 585,699.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    782,115.75 : 1,079,319.74 = 424,419.75 : x
  2. Step 2: Convert to fraction form
    782,115.75/1,079,319.74 = 424,419.75/x
  3. Step 3: Cross multiply
    782,115.75x = 1,079,319.74 × 424,419.75
  4. Step 4: Simplify right side
    782,115.75x = 458,084,612,098.77
  5. Step 5: Solve for x
    x = 458,084,612,098.77/782,115.75
  6. Step 6: Final answer
    x = 585,699.26

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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.