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Finding the Fourth Proportional to 478,642.38, 660,516.54 and 263,776.92

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Solution

The fourth proportional to 478,642.38, 660,516.54 and 263,776.92 is: 364,006.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,642.38 : 660,516.54 = 263,776.92 : x
  2. Step 2: Convert to fraction form
    478,642.38/660,516.54 = 263,776.92/x
  3. Step 3: Cross multiply
    478,642.38x = 660,516.54 × 263,776.92
  4. Step 4: Simplify right side
    478,642.38x = 174,229,018,530.26
  5. Step 5: Solve for x
    x = 174,229,018,530.26/478,642.38
  6. Step 6: Final answer
    x = 364,006.67

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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.