Home / 1,220,209.38-1,683,989.73-676,515.69

Finding the Fourth Proportional to 1,220,209.38, 1,683,989.73 and 676,515.69

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Solution

The fourth proportional to 1,220,209.38, 1,683,989.73 and 676,515.69 is: 933,647.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,220,209.38 : 1,683,989.73 = 676,515.69 : x
  2. Step 2: Convert to fraction form
    1,220,209.38/1,683,989.73 = 676,515.69/x
  3. Step 3: Cross multiply
    1,220,209.38x = 1,683,989.73 × 676,515.69
  4. Step 4: Simplify right side
    1,220,209.38x = 1,139,245,474,143.86
  5. Step 5: Solve for x
    x = 1,139,245,474,143.86/1,220,209.38
  6. Step 6: Final answer
    x = 933,647.53

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Double scale
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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.