Home / 939,129.67-1,408,082.10-618,310.45

Finding the Fourth Proportional to 939,129.67, 1,408,082.10 and 618,310.45

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Solution

The fourth proportional to 939,129.67, 1,408,082.10 and 618,310.45 is: 927,062.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    939,129.67 : 1,408,082.10 = 618,310.45 : x
  2. Step 2: Convert to fraction form
    939,129.67/1,408,082.10 = 618,310.45/x
  3. Step 3: Cross multiply
    939,129.67x = 1,408,082.10 × 618,310.45
  4. Step 4: Simplify right side
    939,129.67x = 870,631,876,887.95
  5. Step 5: Solve for x
    x = 870,631,876,887.95/939,129.67
  6. Step 6: Final answer
    x = 927,062.48

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1.5x scale

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.