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Finding the Fourth Proportional to 659,502, 988,702.20 and 280,720.08

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Solution

The fourth proportional to 659,502, 988,702.20 and 280,720.08 is: 420,845.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    659,502 : 988,702.20 = 280,720.08 : x
  2. Step 2: Convert to fraction form
    659,502/988,702.20 = 280,720.08/x
  3. Step 3: Cross multiply
    659,502x = 988,702.20 × 280,720.08
  4. Step 4: Simplify right side
    659,502x = 277,548,560,680.18
  5. Step 5: Solve for x
    x = 277,548,560,680.18/659,502
  6. Step 6: Final answer
    x = 420,845.67

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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.