Home / 1,220,422.51-1,830,938.68-861,294.57

Finding the Fourth Proportional to 1,220,422.51, 1,830,938.68 and 861,294.57

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Solution

The fourth proportional to 1,220,422.51, 1,830,938.68 and 861,294.57 is: 1,292,157.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,220,422.51 : 1,830,938.68 = 861,294.57 : x
  2. Step 2: Convert to fraction form
    1,220,422.51/1,830,938.68 = 861,294.57/x
  3. Step 3: Cross multiply
    1,220,422.51x = 1,830,938.68 × 861,294.57
  4. Step 4: Simplify right side
    1,220,422.51x = 1,576,977,537,297.57
  5. Step 5: Solve for x
    x = 1,576,977,537,297.57/1,220,422.51
  6. Step 6: Final answer
    x = 1,292,157.04

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.