Home / 699,400.80-1,049,101.20-646,256.70

Finding the Fourth Proportional to 699,400.80, 1,049,101.20 and 646,256.70

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Solution

The fourth proportional to 699,400.80, 1,049,101.20 and 646,256.70 is: 969,385.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    699,400.80 : 1,049,101.20 = 646,256.70 : x
  2. Step 2: Convert to fraction form
    699,400.80/1,049,101.20 = 646,256.70/x
  3. Step 3: Cross multiply
    699,400.80x = 1,049,101.20 × 646,256.70
  4. Step 4: Simplify right side
    699,400.80x = 677,988,679,478.04
  5. Step 5: Solve for x
    x = 677,988,679,478.04/699,400.80
  6. Step 6: Final answer
    x = 969,385.05

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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.