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Finding the Fourth Proportional to 662,648.30, 991,639.65 and 606,661.10

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Solution

The fourth proportional to 662,648.30, 991,639.65 and 606,661.10 is: 907,855.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    662,648.30 : 991,639.65 = 606,661.10 : x
  2. Step 2: Convert to fraction form
    662,648.30/991,639.65 = 606,661.10/x
  3. Step 3: Cross multiply
    662,648.30x = 991,639.65 × 606,661.10
  4. Step 4: Simplify right side
    662,648.30x = 601,589,200,872.62
  5. Step 5: Solve for x
    x = 601,589,200,872.62/662,648.30
  6. Step 6: Final answer
    x = 907,855.95

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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.