Home / 782,117.25-1,079,321.81-424,421.25

Finding the Fourth Proportional to 782,117.25, 1,079,321.81 and 424,421.25

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Solution

The fourth proportional to 782,117.25, 1,079,321.81 and 424,421.25 is: 585,701.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    782,117.25 : 1,079,321.81 = 424,421.25 : x
  2. Step 2: Convert to fraction form
    782,117.25/1,079,321.81 = 424,421.25/x
  3. Step 3: Cross multiply
    782,117.25x = 1,079,321.81 × 424,421.25
  4. Step 4: Simplify right side
    782,117.25x = 458,087,109,630.36
  5. Step 5: Solve for x
    x = 458,087,109,630.36/782,117.25
  6. Step 6: Final answer
    x = 585,701.33

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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.