Home / 821,250.60-1,231,292.70-315,616.20

Finding the Fourth Proportional to 821,250.60, 1,231,292.70 and 315,616.20

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Solution

The fourth proportional to 821,250.60, 1,231,292.70 and 315,616.20 is: 473,200.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    821,250.60 : 1,231,292.70 = 315,616.20 : x
  2. Step 2: Convert to fraction form
    821,250.60/1,231,292.70 = 315,616.20/x
  3. Step 3: Cross multiply
    821,250.60x = 1,231,292.70 × 315,616.20
  4. Step 4: Simplify right side
    821,250.60x = 388,615,923,061.74
  5. Step 5: Solve for x
    x = 388,615,923,061.74/821,250.60
  6. Step 6: Final answer
    x = 473,200.17

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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.