Home / 1,238,252.99-1,708,065.20-778,639.90

Finding the Fourth Proportional to 1,238,252.99, 1,708,065.20 and 778,639.90

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Solution

The fourth proportional to 1,238,252.99, 1,708,065.20 and 778,639.90 is: 1,074,067.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,238,252.99 : 1,708,065.20 = 778,639.90 : x
  2. Step 2: Convert to fraction form
    1,238,252.99/1,708,065.20 = 778,639.90/x
  3. Step 3: Cross multiply
    1,238,252.99x = 1,708,065.20 × 778,639.90
  4. Step 4: Simplify right side
    1,238,252.99x = 1,329,967,708,358.12
  5. Step 5: Solve for x
    x = 1,329,967,708,358.12/1,238,252.99
  6. Step 6: Final answer
    x = 1,074,067.84

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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.