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Finding the Fourth Proportional to 664,705.70, 996,943.35 and 243,764.90

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Solution

The fourth proportional to 664,705.70, 996,943.35 and 243,764.90 is: 365,605.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    664,705.70 : 996,943.35 = 243,764.90 : x
  2. Step 2: Convert to fraction form
    664,705.70/996,943.35 = 243,764.90/x
  3. Step 3: Cross multiply
    664,705.70x = 996,943.35 × 243,764.90
  4. Step 4: Simplify right side
    664,705.70x = 243,019,796,018.42
  5. Step 5: Solve for x
    x = 243,019,796,018.42/664,705.70
  6. Step 6: Final answer
    x = 365,605.10

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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.