Home / 918,108.70-1,377,163.05-619,510.30

Finding the Fourth Proportional to 918,108.70, 1,377,163.05 and 619,510.30

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Solution

The fourth proportional to 918,108.70, 1,377,163.05 and 619,510.30 is: 929,265.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    918,108.70 : 1,377,163.05 = 619,510.30 : x
  2. Step 2: Convert to fraction form
    918,108.70/1,377,163.05 = 619,510.30/x
  3. Step 3: Cross multiply
    918,108.70x = 1,377,163.05 × 619,510.30
  4. Step 4: Simplify right side
    918,108.70x = 853,166,694,254.42
  5. Step 5: Solve for x
    x = 853,166,694,254.42/918,108.70
  6. Step 6: Final answer
    x = 929,265.45

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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.