Home / 1,220,288.79-1,683,821.52-676,424.25

Finding the Fourth Proportional to 1,220,288.79, 1,683,821.52 and 676,424.25

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Solution

The fourth proportional to 1,220,288.79, 1,683,821.52 and 676,424.25 is: 933,367.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,220,288.79 : 1,683,821.52 = 676,424.25 : x
  2. Step 2: Convert to fraction form
    1,220,288.79/1,683,821.52 = 676,424.25/x
  3. Step 3: Cross multiply
    1,220,288.79x = 1,683,821.52 × 676,424.25
  4. Step 4: Simplify right side
    1,220,288.79x = 1,138,977,708,799.86
  5. Step 5: Solve for x
    x = 1,138,977,708,799.86/1,220,288.79
  6. Step 6: Final answer
    x = 933,367.34

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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.