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Finding the Fourth Proportional to 662,908.82, 914,784.64 and 387,292.22

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Solution

The fourth proportional to 662,908.82, 914,784.64 and 387,292.22 is: 534,446.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    662,908.82 : 914,784.64 = 387,292.22 : x
  2. Step 2: Convert to fraction form
    662,908.82/914,784.64 = 387,292.22/x
  3. Step 3: Cross multiply
    662,908.82x = 914,784.64 × 387,292.22
  4. Step 4: Simplify right side
    662,908.82x = 354,288,974,047.50
  5. Step 5: Solve for x
    x = 354,288,974,047.50/662,908.82
  6. Step 6: Final answer
    x = 534,446.01

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.