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Finding the Fourth Proportional to 659,224.80, 990,003.60 and 509,828.40

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Solution

The fourth proportional to 659,224.80, 990,003.60 and 509,828.40 is: 765,644.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    659,224.80 : 990,003.60 = 509,828.40 : x
  2. Step 2: Convert to fraction form
    659,224.80/990,003.60 = 509,828.40/x
  3. Step 3: Cross multiply
    659,224.80x = 990,003.60 × 509,828.40
  4. Step 4: Simplify right side
    659,224.80x = 504,731,951,382.24
  5. Step 5: Solve for x
    x = 504,731,951,382.24/659,224.80
  6. Step 6: Final answer
    x = 765,644.67

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.