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Finding the Fourth Proportional to 478,668.54, 660,551.20 and 260,884.09

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Solution

The fourth proportional to 478,668.54, 660,551.20 and 260,884.09 is: 360,013.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,668.54 : 660,551.20 = 260,884.09 : x
  2. Step 2: Convert to fraction form
    478,668.54/660,551.20 = 260,884.09/x
  3. Step 3: Cross multiply
    478,668.54x = 660,551.20 × 260,884.09
  4. Step 4: Simplify right side
    478,668.54x = 172,327,298,710.41
  5. Step 5: Solve for x
    x = 172,327,298,710.41/478,668.54
  6. Step 6: Final answer
    x = 360,013.84

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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.