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Finding the Fourth Proportional to 631,979.28, 872,030.61 and 360,052.56

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Solution

The fourth proportional to 631,979.28, 872,030.61 and 360,052.56 is: 496,815.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    631,979.28 : 872,030.61 = 360,052.56 : x
  2. Step 2: Convert to fraction form
    631,979.28/872,030.61 = 360,052.56/x
  3. Step 3: Cross multiply
    631,979.28x = 872,030.61 × 360,052.56
  4. Step 4: Simplify right side
    631,979.28x = 313,976,853,528.86
  5. Step 5: Solve for x
    x = 313,976,853,528.86/631,979.28
  6. Step 6: Final answer
    x = 496,815.11

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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.