Home / 1,288,703.78-1,778,411.16-715,797.26

Finding the Fourth Proportional to 1,288,703.78, 1,778,411.16 and 715,797.26

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Solution

The fourth proportional to 1,288,703.78, 1,778,411.16 and 715,797.26 is: 987,800.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,288,703.78 : 1,778,411.16 = 715,797.26 : x
  2. Step 2: Convert to fraction form
    1,288,703.78/1,778,411.16 = 715,797.26/x
  3. Step 3: Cross multiply
    1,288,703.78x = 1,778,411.16 × 715,797.26
  4. Step 4: Simplify right side
    1,288,703.78x = 1,272,981,835,481.42
  5. Step 5: Solve for x
    x = 1,272,981,835,481.42/1,288,703.78
  6. Step 6: Final answer
    x = 987,800.19

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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.