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Finding the Fourth Proportional to 425,209.86, 587,350.47 and 317,593.26

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Solution

The fourth proportional to 425,209.86, 587,350.47 and 317,593.26 is: 438,697.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    425,209.86 : 587,350.47 = 317,593.26 : x
  2. Step 2: Convert to fraction form
    425,209.86/587,350.47 = 317,593.26/x
  3. Step 3: Cross multiply
    425,209.86x = 587,350.47 × 317,593.26
  4. Step 4: Simplify right side
    425,209.86x = 186,538,550,529.83
  5. Step 5: Solve for x
    x = 186,538,550,529.83/425,209.86
  6. Step 6: Final answer
    x = 438,697.61

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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.