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Finding the Fourth Proportional to 665,492.20, 997,946.70 and 266,000.20

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Solution

The fourth proportional to 665,492.20, 997,946.70 and 266,000.20 is: 398,883.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    665,492.20 : 997,946.70 = 266,000.20 : x
  2. Step 2: Convert to fraction form
    665,492.20/997,946.70 = 266,000.20/x
  3. Step 3: Cross multiply
    665,492.20x = 997,946.70 × 266,000.20
  4. Step 4: Simplify right side
    665,492.20x = 265,454,021,789.34
  5. Step 5: Solve for x
    x = 265,454,021,789.34/665,492.20
  6. Step 6: Final answer
    x = 398,883.75

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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.