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Finding the Fourth Proportional to 478,670.54, 660,553.96 and 260,886.09

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Solution

The fourth proportional to 478,670.54, 660,553.96 and 260,886.09 is: 360,016.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,670.54 : 660,553.96 = 260,886.09 : x
  2. Step 2: Convert to fraction form
    478,670.54/660,553.96 = 260,886.09/x
  3. Step 3: Cross multiply
    478,670.54x = 660,553.96 × 260,886.09
  4. Step 4: Simplify right side
    478,670.54x = 172,329,339,858.42
  5. Step 5: Solve for x
    x = 172,329,339,858.42/478,670.54
  6. Step 6: Final answer
    x = 360,016.60

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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.