Home / 1,218,875,433.86-1,682,191,692.78-723,838,142.36

Finding the Fourth Proportional to 1,218,875,433.86, 1,682,191,692.78 and 723,838,142.36

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Solution

The fourth proportional to 1,218,875,433.86, 1,682,191,692.78 and 723,838,142.36 is: 998,981,910.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,218,875,433.86 : 1,682,191,692.78 = 723,838,142.36 : x
  2. Step 2: Convert to fraction form
    1,218,875,433.86/1,682,191,692.78 = 723,838,142.36/x
  3. Step 3: Cross multiply
    1,218,875,433.86x = 1,682,191,692.78 × 723,838,142.36
  4. Step 4: Simplify right side
    1,218,875,433.86x = 1,217,634,509,996,753,920
  5. Step 5: Solve for x
    x = 1,217,634,509,996,753,920/1,218,875,433.86
  6. Step 6: Final answer
    x = 998,981,910.84

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.