Home / 1,091,348.70-1,637,023.05-918,138.30

Finding the Fourth Proportional to 1,091,348.70, 1,637,023.05 and 918,138.30

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Solution

The fourth proportional to 1,091,348.70, 1,637,023.05 and 918,138.30 is: 1,377,207.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,091,348.70 : 1,637,023.05 = 918,138.30 : x
  2. Step 2: Convert to fraction form
    1,091,348.70/1,637,023.05 = 918,138.30/x
  3. Step 3: Cross multiply
    1,091,348.70x = 1,637,023.05 × 918,138.30
  4. Step 4: Simplify right side
    1,091,348.70x = 1,503,013,560,187.82
  5. Step 5: Solve for x
    x = 1,503,013,560,187.82/1,091,348.70
  6. Step 6: Final answer
    x = 1,377,207.45

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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.