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Finding the Fourth Proportional to 662,840.36, 914,428.68 and 447,902

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Solution

The fourth proportional to 662,840.36, 914,428.68 and 447,902 is: 617,908.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    662,840.36 : 914,428.68 = 447,902 : x
  2. Step 2: Convert to fraction form
    662,840.36/914,428.68 = 447,902/x
  3. Step 3: Cross multiply
    662,840.36x = 914,428.68 × 447,902
  4. Step 4: Simplify right side
    662,840.36x = 409,574,434,629.36
  5. Step 5: Solve for x
    x = 409,574,434,629.36/662,840.36
  6. Step 6: Final answer
    x = 617,908.11

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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.