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Finding the Fourth Proportional to 478,626.30, 660,508.80 and 263,774.22

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Solution

The fourth proportional to 478,626.30, 660,508.80 and 263,774.22 is: 364,010.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,626.30 : 660,508.80 = 263,774.22 : x
  2. Step 2: Convert to fraction form
    478,626.30/660,508.80 = 263,774.22/x
  3. Step 3: Cross multiply
    478,626.30x = 660,508.80 × 263,774.22
  4. Step 4: Simplify right side
    478,626.30x = 174,225,193,523.14
  5. Step 5: Solve for x
    x = 174,225,193,523.14/478,626.30
  6. Step 6: Final answer
    x = 364,010.91

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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.