Home / 861,386.98-1,292,878.91-435,222.33

Finding the Fourth Proportional to 861,386.98, 1,292,878.91 and 435,222.33

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Solution

The fourth proportional to 861,386.98, 1,292,878.91 and 435,222.33 is: 653,236.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    861,386.98 : 1,292,878.91 = 435,222.33 : x
  2. Step 2: Convert to fraction form
    861,386.98/1,292,878.91 = 435,222.33/x
  3. Step 3: Cross multiply
    861,386.98x = 1,292,878.91 × 435,222.33
  4. Step 4: Simplify right side
    861,386.98x = 562,689,766,753.78
  5. Step 5: Solve for x
    x = 562,689,766,753.78/861,386.98
  6. Step 6: Final answer
    x = 653,236.91

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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.