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Finding the Fourth Proportional to 478,564.86, 660,433.62 and 263,718.77

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Solution

The fourth proportional to 478,564.86, 660,433.62 and 263,718.77 is: 363,939.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,564.86 : 660,433.62 = 263,718.77 : x
  2. Step 2: Convert to fraction form
    478,564.86/660,433.62 = 263,718.77/x
  3. Step 3: Cross multiply
    478,564.86x = 660,433.62 × 263,718.77
  4. Step 4: Simplify right side
    478,564.86x = 174,168,738,630.88
  5. Step 5: Solve for x
    x = 174,168,738,630.88/478,564.86
  6. Step 6: Final answer
    x = 363,939.67

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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.