Home / 820,153.90-1,230,230.85-788,661.10

Finding the Fourth Proportional to 820,153.90, 1,230,230.85 and 788,661.10

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Solution

The fourth proportional to 820,153.90, 1,230,230.85 and 788,661.10 is: 1,182,991.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    820,153.90 : 1,230,230.85 = 788,661.10 : x
  2. Step 2: Convert to fraction form
    820,153.90/1,230,230.85 = 788,661.10/x
  3. Step 3: Cross multiply
    820,153.90x = 1,230,230.85 × 788,661.10
  4. Step 4: Simplify right side
    820,153.90x = 970,235,215,414.94
  5. Step 5: Solve for x
    x = 970,235,215,414.94/820,153.90
  6. Step 6: Final answer
    x = 1,182,991.65

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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.