Home / 1,238,231.54-1,708,035.57-778,618.70

Finding the Fourth Proportional to 1,238,231.54, 1,708,035.57 and 778,618.70

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Solution

The fourth proportional to 1,238,231.54, 1,708,035.57 and 778,618.70 is: 1,074,038.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,238,231.54 : 1,708,035.57 = 778,618.70 : x
  2. Step 2: Convert to fraction form
    1,238,231.54/1,708,035.57 = 778,618.70/x
  3. Step 3: Cross multiply
    1,238,231.54x = 1,708,035.57 × 778,618.70
  4. Step 4: Simplify right side
    1,238,231.54x = 1,329,908,435,067.16
  5. Step 5: Solve for x
    x = 1,329,908,435,067.16/1,238,231.54
  6. Step 6: Final answer
    x = 1,074,038.57

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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.