Home / 821,207.80-1,231,811.70-483,902.20

Finding the Fourth Proportional to 821,207.80, 1,231,811.70 and 483,902.20

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Solution

The fourth proportional to 821,207.80, 1,231,811.70 and 483,902.20 is: 725,853.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    821,207.80 : 1,231,811.70 = 483,902.20 : x
  2. Step 2: Convert to fraction form
    821,207.80/1,231,811.70 = 483,902.20/x
  3. Step 3: Cross multiply
    821,207.80x = 1,231,811.70 × 483,902.20
  4. Step 4: Simplify right side
    821,207.80x = 596,076,391,615.74
  5. Step 5: Solve for x
    x = 596,076,391,615.74/821,207.80
  6. Step 6: Final answer
    x = 725,853.30

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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.