Home / 1,317,649.43-1,818,280.71-728,913.69

Finding the Fourth Proportional to 1,317,649.43, 1,818,280.71 and 728,913.69

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Solution

The fourth proportional to 1,317,649.43, 1,818,280.71 and 728,913.69 is: 1,005,859.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,317,649.43 : 1,818,280.71 = 728,913.69 : x
  2. Step 2: Convert to fraction form
    1,317,649.43/1,818,280.71 = 728,913.69/x
  3. Step 3: Cross multiply
    1,317,649.43x = 1,818,280.71 × 728,913.69
  4. Step 4: Simplify right side
    1,317,649.43x = 1,325,369,701,781.92
  5. Step 5: Solve for x
    x = 1,325,369,701,781.92/1,317,649.43
  6. Step 6: Final answer
    x = 1,005,859.13

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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.