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Finding the Fourth Proportional to 660,042.84, 988,290.42 and 418,850.90

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Solution

The fourth proportional to 660,042.84, 988,290.42 and 418,850.90 is: 627,150.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    660,042.84 : 988,290.42 = 418,850.90 : x
  2. Step 2: Convert to fraction form
    660,042.84/988,290.42 = 418,850.90/x
  3. Step 3: Cross multiply
    660,042.84x = 988,290.42 × 418,850.90
  4. Step 4: Simplify right side
    660,042.84x = 413,946,329,072.32
  5. Step 5: Solve for x
    x = 413,946,329,072.32/660,042.84
  6. Step 6: Final answer
    x = 627,150.70

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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.