Home / 1,243,835.32-1,865,746.61-485,753.78

Finding the Fourth Proportional to 1,243,835.32, 1,865,746.61 and 485,753.78

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Solution

The fourth proportional to 1,243,835.32, 1,865,746.61 and 485,753.78 is: 728,628.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,243,835.32 : 1,865,746.61 = 485,753.78 : x
  2. Step 2: Convert to fraction form
    1,243,835.32/1,865,746.61 = 485,753.78/x
  3. Step 3: Cross multiply
    1,243,835.32x = 1,865,746.61 × 485,753.78
  4. Step 4: Simplify right side
    1,243,835.32x = 906,293,468,329.69
  5. Step 5: Solve for x
    x = 906,293,468,329.69/1,243,835.32
  6. Step 6: Final answer
    x = 728,628.18

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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.