Home / 1,218,032,620.24-1,680,840,006.82-661,103,709.88

Finding the Fourth Proportional to 1,218,032,620.24, 1,680,840,006.82 and 661,103,709.88

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Solution

The fourth proportional to 1,218,032,620.24, 1,680,840,006.82 and 661,103,709.88 is: 912,298,690.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,218,032,620.24 : 1,680,840,006.82 = 661,103,709.88 : x
  2. Step 2: Convert to fraction form
    1,218,032,620.24/1,680,840,006.82 = 661,103,709.88/x
  3. Step 3: Cross multiply
    1,218,032,620.24x = 1,680,840,006.82 × 661,103,709.88
  4. Step 4: Simplify right side
    1,218,032,620.24x = 1,111,209,564,223,426,432
  5. Step 5: Solve for x
    x = 1,111,209,564,223,426,432/1,218,032,620.24
  6. Step 6: Final answer
    x = 912,298,690.33

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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.