Home / 1,238,231.30-1,708,035.22-778,618.46

Finding the Fourth Proportional to 1,238,231.30, 1,708,035.22 and 778,618.46

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Solution

The fourth proportional to 1,238,231.30, 1,708,035.22 and 778,618.46 is: 1,074,038.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,238,231.30 : 1,708,035.22 = 778,618.46 : x
  2. Step 2: Convert to fraction form
    1,238,231.30/1,708,035.22 = 778,618.46/x
  3. Step 3: Cross multiply
    1,238,231.30x = 1,708,035.22 × 778,618.46
  4. Step 4: Simplify right side
    1,238,231.30x = 1,329,907,752,622.16
  5. Step 5: Solve for x
    x = 1,329,907,752,622.16/1,238,231.30
  6. Step 6: Final answer
    x = 1,074,038.23

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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.