Home / 891,471,999.80-1,337,207,999.70-278,055,241.40

Finding the Fourth Proportional to 891,471,999.80, 1,337,207,999.70 and 278,055,241.40

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Solution

The fourth proportional to 891,471,999.80, 1,337,207,999.70 and 278,055,241.40 is: 417,082,862.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    891,471,999.80 : 1,337,207,999.70 = 278,055,241.40 : x
  2. Step 2: Convert to fraction form
    891,471,999.80/1,337,207,999.70 = 278,055,241.40/x
  3. Step 3: Cross multiply
    891,471,999.80x = 1,337,207,999.70 × 278,055,241.40
  4. Step 4: Simplify right side
    891,471,999.80x = 371,817,693,158,594,624
  5. Step 5: Solve for x
    x = 371,817,693,158,594,624/891,471,999.80
  6. Step 6: Final answer
    x = 417,082,862.10

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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.