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Finding the Fourth Proportional to 808,069, 1,212,278.46 and 309,433

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Solution

The fourth proportional to 808,069, 1,212,278.46 and 309,433 is: 464,216.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    808,069 : 1,212,278.46 = 309,433 : x
  2. Step 2: Convert to fraction form
    808,069/1,212,278.46 = 309,433/x
  3. Step 3: Cross multiply
    808,069x = 1,212,278.46 × 309,433
  4. Step 4: Simplify right side
    808,069x = 375,118,960,713.18
  5. Step 5: Solve for x
    x = 375,118,960,713.18/808,069
  6. Step 6: Final answer
    x = 464,216.50

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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.