Home / 613,815.47-847,107.92-372,108.23

Finding the Fourth Proportional to 613,815.47, 847,107.92 and 372,108.23

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Solution

The fourth proportional to 613,815.47, 847,107.92 and 372,108.23 is: 513,535.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    613,815.47 : 847,107.92 = 372,108.23 : x
  2. Step 2: Convert to fraction form
    613,815.47/847,107.92 = 372,108.23/x
  3. Step 3: Cross multiply
    613,815.47x = 847,107.92 × 372,108.23
  4. Step 4: Simplify right side
    613,815.47x = 315,215,828,730.18
  5. Step 5: Solve for x
    x = 315,215,828,730.18/613,815.47
  6. Step 6: Final answer
    x = 513,535.17

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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.