Home / 781,713.54-1,077,290.37-626,488.51

Finding the Fourth Proportional to 781,713.54, 1,077,290.37 and 626,488.51

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Solution

The fourth proportional to 781,713.54, 1,077,290.37 and 626,488.51 is: 863,372.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    781,713.54 : 1,077,290.37 = 626,488.51 : x
  2. Step 2: Convert to fraction form
    781,713.54/1,077,290.37 = 626,488.51/x
  3. Step 3: Cross multiply
    781,713.54x = 1,077,290.37 × 626,488.51
  4. Step 4: Simplify right side
    781,713.54x = 674,910,038,738.65
  5. Step 5: Solve for x
    x = 674,910,038,738.65/781,713.54
  6. Step 6: Final answer
    x = 863,372.58

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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.