Home / 1,020,145.80-1,528,469.10-486,517.80

Finding the Fourth Proportional to 1,020,145.80, 1,528,469.10 and 486,517.80

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Solution

The fourth proportional to 1,020,145.80, 1,528,469.10 and 486,517.80 is: 728,942.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,020,145.80 : 1,528,469.10 = 486,517.80 : x
  2. Step 2: Convert to fraction form
    1,020,145.80/1,528,469.10 = 486,517.80/x
  3. Step 3: Cross multiply
    1,020,145.80x = 1,528,469.10 × 486,517.80
  4. Step 4: Simplify right side
    1,020,145.80x = 743,627,423,899.98
  5. Step 5: Solve for x
    x = 743,627,423,899.98/1,020,145.80
  6. Step 6: Final answer
    x = 728,942.30

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Double scale
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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.