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Finding the Fourth Proportional to 478,572.68, 660,400.62 and 263,700.74

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Solution

The fourth proportional to 478,572.68, 660,400.62 and 263,700.74 is: 363,890.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,572.68 : 660,400.62 = 263,700.74 : x
  2. Step 2: Convert to fraction form
    478,572.68/660,400.62 = 263,700.74/x
  3. Step 3: Cross multiply
    478,572.68x = 660,400.62 × 263,700.74
  4. Step 4: Simplify right side
    478,572.68x = 174,148,132,190.46
  5. Step 5: Solve for x
    x = 174,148,132,190.46/478,572.68
  6. Step 6: Final answer
    x = 363,890.67

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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.