Home / 1,278,228.80-1,917,343.20-807,003.20

Finding the Fourth Proportional to 1,278,228.80, 1,917,343.20 and 807,003.20

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Solution

The fourth proportional to 1,278,228.80, 1,917,343.20 and 807,003.20 is: 1,210,504.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,278,228.80 : 1,917,343.20 = 807,003.20 : x
  2. Step 2: Convert to fraction form
    1,278,228.80/1,917,343.20 = 807,003.20/x
  3. Step 3: Cross multiply
    1,278,228.80x = 1,917,343.20 × 807,003.20
  4. Step 4: Simplify right side
    1,278,228.80x = 1,547,302,097,898.24
  5. Step 5: Solve for x
    x = 1,547,302,097,898.24/1,278,228.80
  6. Step 6: Final answer
    x = 1,210,504.80

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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.