Home / 1,220,205.88-1,683,984.90-676,512.19

Finding the Fourth Proportional to 1,220,205.88, 1,683,984.90 and 676,512.19

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Solution

The fourth proportional to 1,220,205.88, 1,683,984.90 and 676,512.19 is: 933,642.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,220,205.88 : 1,683,984.90 = 676,512.19 : x
  2. Step 2: Convert to fraction form
    1,220,205.88/1,683,984.90 = 676,512.19/x
  3. Step 3: Cross multiply
    1,220,205.88x = 1,683,984.90 × 676,512.19
  4. Step 4: Simplify right side
    1,220,205.88x = 1,139,236,312,625.93
  5. Step 5: Solve for x
    x = 1,139,236,312,625.93/1,220,205.88
  6. Step 6: Final answer
    x = 933,642.70

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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.