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Finding the Fourth Proportional to 518,867.85, 778,301.78 and 448,883.85

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Solution

The fourth proportional to 518,867.85, 778,301.78 and 448,883.85 is: 673,325.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    518,867.85 : 778,301.78 = 448,883.85 : x
  2. Step 2: Convert to fraction form
    518,867.85/778,301.78 = 448,883.85/x
  3. Step 3: Cross multiply
    518,867.85x = 778,301.78 × 448,883.85
  4. Step 4: Simplify right side
    518,867.85x = 349,367,097,223.83
  5. Step 5: Solve for x
    x = 349,367,097,223.83/518,867.85
  6. Step 6: Final answer
    x = 673,325.78

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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.