Home / 1,143,691.20-1,578,263.40-660,240

Finding the Fourth Proportional to 1,143,691.20, 1,578,263.40 and 660,240

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Solution

The fourth proportional to 1,143,691.20, 1,578,263.40 and 660,240 is: 911,113.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,143,691.20 : 1,578,263.40 = 660,240 : x
  2. Step 2: Convert to fraction form
    1,143,691.20/1,578,263.40 = 660,240/x
  3. Step 3: Cross multiply
    1,143,691.20x = 1,578,263.40 × 660,240
  4. Step 4: Simplify right side
    1,143,691.20x = 1,042,032,627,216.00
  5. Step 5: Solve for x
    x = 1,042,032,627,216.00/1,143,691.20
  6. Step 6: Final answer
    x = 911,113.62

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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.