Home / 815,670.80-1,223,506.20-478,872.80

Finding the Fourth Proportional to 815,670.80, 1,223,506.20 and 478,872.80

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Solution

The fourth proportional to 815,670.80, 1,223,506.20 and 478,872.80 is: 718,309.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    815,670.80 : 1,223,506.20 = 478,872.80 : x
  2. Step 2: Convert to fraction form
    815,670.80/1,223,506.20 = 478,872.80/x
  3. Step 3: Cross multiply
    815,670.80x = 1,223,506.20 × 478,872.80
  4. Step 4: Simplify right side
    815,670.80x = 585,903,839,811.36
  5. Step 5: Solve for x
    x = 585,903,839,811.36/815,670.80
  6. Step 6: Final answer
    x = 718,309.20

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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.