Home / 918,008.20-1,377,012.30-858,521.80

Finding the Fourth Proportional to 918,008.20, 1,377,012.30 and 858,521.80

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Solution

The fourth proportional to 918,008.20, 1,377,012.30 and 858,521.80 is: 1,287,782.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    918,008.20 : 1,377,012.30 = 858,521.80 : x
  2. Step 2: Convert to fraction form
    918,008.20/1,377,012.30 = 858,521.80/x
  3. Step 3: Cross multiply
    918,008.20x = 1,377,012.30 × 858,521.80
  4. Step 4: Simplify right side
    918,008.20x = 1,182,195,078,418.14
  5. Step 5: Solve for x
    x = 1,182,195,078,418.14/918,008.20
  6. Step 6: Final answer
    x = 1,287,782.70

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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.