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Finding the Fourth Proportional to 477,990.72, 659,201.76 and 377,213.76

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Solution

The fourth proportional to 477,990.72, 659,201.76 and 377,213.76 is: 520,219.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    477,990.72 : 659,201.76 = 377,213.76 : x
  2. Step 2: Convert to fraction form
    477,990.72/659,201.76 = 377,213.76/x
  3. Step 3: Cross multiply
    477,990.72x = 659,201.76 × 377,213.76
  4. Step 4: Simplify right side
    477,990.72x = 248,659,974,488.22
  5. Step 5: Solve for x
    x = 248,659,974,488.22/477,990.72
  6. Step 6: Final answer
    x = 520,219.25

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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.