Home / 1,209,910.74-1,669,698.20-658,642.39

Finding the Fourth Proportional to 1,209,910.74, 1,669,698.20 and 658,642.39

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Solution

The fourth proportional to 1,209,910.74, 1,669,698.20 and 658,642.39 is: 908,938.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,209,910.74 : 1,669,698.20 = 658,642.39 : x
  2. Step 2: Convert to fraction form
    1,209,910.74/1,669,698.20 = 658,642.39/x
  3. Step 3: Cross multiply
    1,209,910.74x = 1,669,698.20 × 658,642.39
  4. Step 4: Simplify right side
    1,209,910.74x = 1,099,734,009,733.49
  5. Step 5: Solve for x
    x = 1,099,734,009,733.49/1,209,910.74
  6. Step 6: Final answer
    x = 908,938.13

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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.