Home / 1,220,170.40-1,683,936-676,476.80

Finding the Fourth Proportional to 1,220,170.40, 1,683,936 and 676,476.80

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Solution

The fourth proportional to 1,220,170.40, 1,683,936 and 676,476.80 is: 933,593.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,220,170.40 : 1,683,936 = 676,476.80 : x
  2. Step 2: Convert to fraction form
    1,220,170.40/1,683,936 = 676,476.80/x
  3. Step 3: Cross multiply
    1,220,170.40x = 1,683,936 × 676,476.80
  4. Step 4: Simplify right side
    1,220,170.40x = 1,139,143,636,684.80
  5. Step 5: Solve for x
    x = 1,139,143,636,684.80/1,220,170.40
  6. Step 6: Final answer
    x = 933,593.90

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1.5x scale

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.