Home / 1,100,423.86-1,518,221.92-664,678.39

Finding the Fourth Proportional to 1,100,423.86, 1,518,221.92 and 664,678.39

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Solution

The fourth proportional to 1,100,423.86, 1,518,221.92 and 664,678.39 is: 917,036.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,100,423.86 : 1,518,221.92 = 664,678.39 : x
  2. Step 2: Convert to fraction form
    1,100,423.86/1,518,221.92 = 664,678.39/x
  3. Step 3: Cross multiply
    1,100,423.86x = 1,518,221.92 × 664,678.39
  4. Step 4: Simplify right side
    1,100,423.86x = 1,009,129,301,448.31
  5. Step 5: Solve for x
    x = 1,009,129,301,448.31/1,100,423.86
  6. Step 6: Final answer
    x = 917,036.91

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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.