Home / 969,841.75-1,338,423.13-540,121.87

Finding the Fourth Proportional to 969,841.75, 1,338,423.13 and 540,121.87

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Solution

The fourth proportional to 969,841.75, 1,338,423.13 and 540,121.87 is: 745,391.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    969,841.75 : 1,338,423.13 = 540,121.87 : x
  2. Step 2: Convert to fraction form
    969,841.75/1,338,423.13 = 540,121.87/x
  3. Step 3: Cross multiply
    969,841.75x = 1,338,423.13 × 540,121.87
  4. Step 4: Simplify right side
    969,841.75x = 722,911,603,826.85
  5. Step 5: Solve for x
    x = 722,911,603,826.85/969,841.75
  6. Step 6: Final answer
    x = 745,391.30

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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.