Home / 1,070,206.39-1,603,170.77-643,508.62

Finding the Fourth Proportional to 1,070,206.39, 1,603,170.77 and 643,508.62

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Solution

The fourth proportional to 1,070,206.39, 1,603,170.77 and 643,508.62 is: 963,976.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,070,206.39 : 1,603,170.77 = 643,508.62 : x
  2. Step 2: Convert to fraction form
    1,070,206.39/1,603,170.77 = 643,508.62/x
  3. Step 3: Cross multiply
    1,070,206.39x = 1,603,170.77 × 643,508.62
  4. Step 4: Simplify right side
    1,070,206.39x = 1,031,654,202,601.57
  5. Step 5: Solve for x
    x = 1,031,654,202,601.57/1,070,206.39
  6. Step 6: Final answer
    x = 963,976.87

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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.