Home / 1,218,032,635.65-1,680,840,028.03-661,103,725.29

Finding the Fourth Proportional to 1,218,032,635.65, 1,680,840,028.03 and 661,103,725.29

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Solution

The fourth proportional to 1,218,032,635.65, 1,680,840,028.03 and 661,103,725.29 is: 912,298,711.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,218,032,635.65 : 1,680,840,028.03 = 661,103,725.29 : x
  2. Step 2: Convert to fraction form
    1,218,032,635.65/1,680,840,028.03 = 661,103,725.29/x
  3. Step 3: Cross multiply
    1,218,032,635.65x = 1,680,840,028.03 × 661,103,725.29
  4. Step 4: Simplify right side
    1,218,032,635.65x = 1,111,209,604,147,180,928
  5. Step 5: Solve for x
    x = 1,111,209,604,147,180,928/1,218,032,635.65
  6. Step 6: Final answer
    x = 912,298,711.56

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Double scale
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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.