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Finding the Fourth Proportional to 478,448.43, 660,257.31 and 263,586.63

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Solution

The fourth proportional to 478,448.43, 660,257.31 and 263,586.63 is: 363,748.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,448.43 : 660,257.31 = 263,586.63 : x
  2. Step 2: Convert to fraction form
    478,448.43/660,257.31 = 263,586.63/x
  3. Step 3: Cross multiply
    478,448.43x = 660,257.31 × 263,586.63
  4. Step 4: Simplify right side
    478,448.43x = 174,034,999,275.77
  5. Step 5: Solve for x
    x = 174,034,999,275.77/478,448.43
  6. Step 6: Final answer
    x = 363,748.71

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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.