Home / 867,393.64-1,196,775.66-499,780.72

Finding the Fourth Proportional to 867,393.64, 1,196,775.66 and 499,780.72

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Solution

The fourth proportional to 867,393.64, 1,196,775.66 and 499,780.72 is: 689,566.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    867,393.64 : 1,196,775.66 = 499,780.72 : x
  2. Step 2: Convert to fraction form
    867,393.64/1,196,775.66 = 499,780.72/x
  3. Step 3: Cross multiply
    867,393.64x = 1,196,775.66 × 499,780.72
  4. Step 4: Simplify right side
    867,393.64x = 598,125,401,033.28
  5. Step 5: Solve for x
    x = 598,125,401,033.28/867,393.64
  6. Step 6: Final answer
    x = 689,566.27

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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 (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.