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Finding the Fourth Proportional to 698,720.69, 964,969.67 and 622,554.90

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Solution

The fourth proportional to 698,720.69, 964,969.67 and 622,554.90 is: 859,780.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    698,720.69 : 964,969.67 = 622,554.90 : x
  2. Step 2: Convert to fraction form
    698,720.69/964,969.67 = 622,554.90/x
  3. Step 3: Cross multiply
    698,720.69x = 964,969.67 × 622,554.90
  4. Step 4: Simplify right side
    698,720.69x = 600,746,599,775.59
  5. Step 5: Solve for x
    x = 600,746,599,775.59/698,720.69
  6. Step 6: Final answer
    x = 859,780.76

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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.