Home / 820,156.70-1,230,235.05-731,510.30

Finding the Fourth Proportional to 820,156.70, 1,230,235.05 and 731,510.30

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Solution

The fourth proportional to 820,156.70, 1,230,235.05 and 731,510.30 is: 1,097,265.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    820,156.70 : 1,230,235.05 = 731,510.30 : x
  2. Step 2: Convert to fraction form
    820,156.70/1,230,235.05 = 731,510.30/x
  3. Step 3: Cross multiply
    820,156.70x = 1,230,235.05 × 731,510.30
  4. Step 4: Simplify right side
    820,156.70x = 899,929,610,496.02
  5. Step 5: Solve for x
    x = 899,929,610,496.02/820,156.70
  6. Step 6: Final answer
    x = 1,097,265.45

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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.