Home / 698,721.69-964,971.05-622,555.90

Finding the Fourth Proportional to 698,721.69, 964,971.05 and 622,555.90

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Solution

The fourth proportional to 698,721.69, 964,971.05 and 622,555.90 is: 859,782.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    698,721.69 : 964,971.05 = 622,555.90 : x
  2. Step 2: Convert to fraction form
    698,721.69/964,971.05 = 622,555.90/x
  3. Step 3: Cross multiply
    698,721.69x = 964,971.05 × 622,555.90
  4. Step 4: Simplify right side
    698,721.69x = 600,748,420,506.70
  5. Step 5: Solve for x
    x = 600,748,420,506.70/698,721.69
  6. Step 6: Final answer
    x = 859,782.13

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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.