Home / 1,218,032,633.90-1,680,840,025.62-661,103,723.54

Finding the Fourth Proportional to 1,218,032,633.90, 1,680,840,025.62 and 661,103,723.54

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Solution

The fourth proportional to 1,218,032,633.90, 1,680,840,025.62 and 661,103,723.54 is: 912,298,709.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,218,032,633.90 : 1,680,840,025.62 = 661,103,723.54 : x
  2. Step 2: Convert to fraction form
    1,218,032,633.90/1,680,840,025.62 = 661,103,723.54/x
  3. Step 3: Cross multiply
    1,218,032,633.90x = 1,680,840,025.62 × 661,103,723.54
  4. Step 4: Simplify right side
    1,218,032,633.90x = 1,111,209,599,604,046,720
  5. Step 5: Solve for x
    x = 1,111,209,599,604,046,720/1,218,032,633.90
  6. Step 6: Final answer
    x = 912,298,709.15

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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.