Home / 699,418.80-1,049,128.20-620,686.80

Finding the Fourth Proportional to 699,418.80, 1,049,128.20 and 620,686.80

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Solution

The fourth proportional to 699,418.80, 1,049,128.20 and 620,686.80 is: 931,030.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    699,418.80 : 1,049,128.20 = 620,686.80 : x
  2. Step 2: Convert to fraction form
    699,418.80/1,049,128.20 = 620,686.80/x
  3. Step 3: Cross multiply
    699,418.80x = 1,049,128.20 × 620,686.80
  4. Step 4: Simplify right side
    699,418.80x = 651,180,025,247.76
  5. Step 5: Solve for x
    x = 651,180,025,247.76/699,418.80
  6. Step 6: Final answer
    x = 931,030.20

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Double scale
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Similar ratio
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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.