Home / 820,221.30-1,230,331.95-579,683.70

Finding the Fourth Proportional to 820,221.30, 1,230,331.95 and 579,683.70

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Solution

The fourth proportional to 820,221.30, 1,230,331.95 and 579,683.70 is: 869,525.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    820,221.30 : 1,230,331.95 = 579,683.70 : x
  2. Step 2: Convert to fraction form
    820,221.30/1,230,331.95 = 579,683.70/x
  3. Step 3: Cross multiply
    820,221.30x = 1,230,331.95 × 579,683.70
  4. Step 4: Simplify right side
    820,221.30x = 713,203,377,004.22
  5. Step 5: Solve for x
    x = 713,203,377,004.22/820,221.30
  6. Step 6: Final answer
    x = 869,525.55

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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.