Home / 918,271.80-1,377,407.70-815,920.20

Finding the Fourth Proportional to 918,271.80, 1,377,407.70 and 815,920.20

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Solution

The fourth proportional to 918,271.80, 1,377,407.70 and 815,920.20 is: 1,223,880.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    918,271.80 : 1,377,407.70 = 815,920.20 : x
  2. Step 2: Convert to fraction form
    918,271.80/1,377,407.70 = 815,920.20/x
  3. Step 3: Cross multiply
    918,271.80x = 1,377,407.70 × 815,920.20
  4. Step 4: Simplify right side
    918,271.80x = 1,123,854,766,065.54
  5. Step 5: Solve for x
    x = 1,123,854,766,065.54/918,271.80
  6. Step 6: Final answer
    x = 1,223,880.30

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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.