Home / 782,108.39-1,079,309.58-424,412.39

Finding the Fourth Proportional to 782,108.39, 1,079,309.58 and 424,412.39

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Solution

The fourth proportional to 782,108.39, 1,079,309.58 and 424,412.39 is: 585,689.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    782,108.39 : 1,079,309.58 = 424,412.39 : x
  2. Step 2: Convert to fraction form
    782,108.39/1,079,309.58 = 424,412.39/x
  3. Step 3: Cross multiply
    782,108.39x = 1,079,309.58 × 424,412.39
  4. Step 4: Simplify right side
    782,108.39x = 458,072,358,397.70
  5. Step 5: Solve for x
    x = 458,072,358,397.70/782,108.39
  6. Step 6: Final answer
    x = 585,689.10

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Double scale
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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.