Home / 830,156.80-1,245,235.20-725,180.80

Finding the Fourth Proportional to 830,156.80, 1,245,235.20 and 725,180.80

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Solution

The fourth proportional to 830,156.80, 1,245,235.20 and 725,180.80 is: 1,087,771.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    830,156.80 : 1,245,235.20 = 725,180.80 : x
  2. Step 2: Convert to fraction form
    830,156.80/1,245,235.20 = 725,180.80/x
  3. Step 3: Cross multiply
    830,156.80x = 1,245,235.20 × 725,180.80
  4. Step 4: Simplify right side
    830,156.80x = 903,020,658,524.16
  5. Step 5: Solve for x
    x = 903,020,658,524.16/830,156.80
  6. Step 6: Final answer
    x = 1,087,771.20

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Double scale
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Similar ratio
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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.