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Finding the Fourth Proportional to 478,641.83, 660,556.89 and 274,758.75

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Solution

The fourth proportional to 478,641.83, 660,556.89 and 274,758.75 is: 379,184.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,641.83 : 660,556.89 = 274,758.75 : x
  2. Step 2: Convert to fraction form
    478,641.83/660,556.89 = 274,758.75/x
  3. Step 3: Cross multiply
    478,641.83x = 660,556.89 × 274,758.75
  4. Step 4: Simplify right side
    478,641.83x = 181,493,785,400.29
  5. Step 5: Solve for x
    x = 181,493,785,400.29/478,641.83
  6. Step 6: Final answer
    x = 379,184.97

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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.