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Finding the Fourth Proportional to 545,403.39, 817,831.36 and 317,772.56

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Solution

The fourth proportional to 545,403.39, 817,831.36 and 317,772.56 is: 476,499.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    545,403.39 : 817,831.36 = 317,772.56 : x
  2. Step 2: Convert to fraction form
    545,403.39/817,831.36 = 317,772.56/x
  3. Step 3: Cross multiply
    545,403.39x = 817,831.36 × 317,772.56
  4. Step 4: Simplify right side
    545,403.39x = 259,884,367,357.28
  5. Step 5: Solve for x
    x = 259,884,367,357.28/545,403.39
  6. Step 6: Final answer
    x = 476,499.37

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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.