Home / 259,745,510.64-389,608,815.72-77,987,965.68

Finding the Fourth Proportional to 259,745,510.64, 389,608,815.72 and 77,987,965.68

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Solution

The fourth proportional to 259,745,510.64, 389,608,815.72 and 77,987,965.68 is: 116,979,111.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    259,745,510.64 : 389,608,815.72 = 77,987,965.68 : x
  2. Step 2: Convert to fraction form
    259,745,510.64/389,608,815.72 = 77,987,965.68/x
  3. Step 3: Cross multiply
    259,745,510.64x = 389,608,815.72 × 77,987,965.68
  4. Step 4: Simplify right side
    259,745,510.64x = 30,384,798,948,996,808
  5. Step 5: Solve for x
    x = 30,384,798,948,996,808/259,745,510.64
  6. Step 6: Final answer
    x = 116,979,111.11

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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.