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Finding the Fourth Proportional to 478,860.82, 660,808.01 and 261,064.78

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Solution

The fourth proportional to 478,860.82, 660,808.01 and 261,064.78 is: 360,258.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,860.82 : 660,808.01 = 261,064.78 : x
  2. Step 2: Convert to fraction form
    478,860.82/660,808.01 = 261,064.78/x
  3. Step 3: Cross multiply
    478,860.82x = 660,808.01 × 261,064.78
  4. Step 4: Simplify right side
    478,860.82x = 172,513,696,753.53
  5. Step 5: Solve for x
    x = 172,513,696,753.53/478,860.82
  6. Step 6: Final answer
    x = 360,258.54

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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.