Home / 1,361,121.96-1,878,456.78-788,172.24

Finding the Fourth Proportional to 1,361,121.96, 1,878,456.78 and 788,172.24

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Solution

The fourth proportional to 1,361,121.96, 1,878,456.78 and 788,172.24 is: 1,087,740.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,361,121.96 : 1,878,456.78 = 788,172.24 : x
  2. Step 2: Convert to fraction form
    1,361,121.96/1,878,456.78 = 788,172.24/x
  3. Step 3: Cross multiply
    1,361,121.96x = 1,878,456.78 × 788,172.24
  4. Step 4: Simplify right side
    1,361,121.96x = 1,480,547,488,035.79
  5. Step 5: Solve for x
    x = 1,480,547,488,035.79/1,361,121.96
  6. Step 6: Final answer
    x = 1,087,740.50

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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.