Home / 840,727.45-1,160,229.52-478,203.55

Finding the Fourth Proportional to 840,727.45, 1,160,229.52 and 478,203.55

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Solution

The fourth proportional to 840,727.45, 1,160,229.52 and 478,203.55 is: 659,935.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    840,727.45 : 1,160,229.52 = 478,203.55 : x
  2. Step 2: Convert to fraction form
    840,727.45/1,160,229.52 = 478,203.55/x
  3. Step 3: Cross multiply
    840,727.45x = 1,160,229.52 × 478,203.55
  4. Step 4: Simplify right side
    840,727.45x = 554,825,872,975.98
  5. Step 5: Solve for x
    x = 554,825,872,975.98/840,727.45
  6. Step 6: Final answer
    x = 659,935.48

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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.