Home / 613,816.47-847,109.30-372,109.23

Finding the Fourth Proportional to 613,816.47, 847,109.30 and 372,109.23

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Solution

The fourth proportional to 613,816.47, 847,109.30 and 372,109.23 is: 513,536.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    613,816.47 : 847,109.30 = 372,109.23 : x
  2. Step 2: Convert to fraction form
    613,816.47/847,109.30 = 372,109.23/x
  3. Step 3: Cross multiply
    613,816.47x = 847,109.30 × 372,109.23
  4. Step 4: Simplify right side
    613,816.47x = 315,217,189,348.84
  5. Step 5: Solve for x
    x = 315,217,189,348.84/613,816.47
  6. Step 6: Final answer
    x = 513,536.55

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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.