Home / 918,139.80-1,377,209.70-740,992.80

Finding the Fourth Proportional to 918,139.80, 1,377,209.70 and 740,992.80

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Solution

The fourth proportional to 918,139.80, 1,377,209.70 and 740,992.80 is: 1,111,489.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    918,139.80 : 1,377,209.70 = 740,992.80 : x
  2. Step 2: Convert to fraction form
    918,139.80/1,377,209.70 = 740,992.80/x
  3. Step 3: Cross multiply
    918,139.80x = 1,377,209.70 × 740,992.80
  4. Step 4: Simplify right side
    918,139.80x = 1,020,502,471,790.16
  5. Step 5: Solve for x
    x = 1,020,502,471,790.16/918,139.80
  6. Step 6: Final answer
    x = 1,111,489.20

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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.