Home / 626,821.28-865,028.40-340,353.44

Finding the Fourth Proportional to 626,821.28, 865,028.40 and 340,353.44

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Solution

The fourth proportional to 626,821.28, 865,028.40 and 340,353.44 is: 469,695.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    626,821.28 : 865,028.40 = 340,353.44 : x
  2. Step 2: Convert to fraction form
    626,821.28/865,028.40 = 340,353.44/x
  3. Step 3: Cross multiply
    626,821.28x = 865,028.40 × 340,353.44
  4. Step 4: Simplify right side
    626,821.28x = 294,415,391,637.70
  5. Step 5: Solve for x
    x = 294,415,391,637.70/626,821.28
  6. Step 6: Final answer
    x = 469,695.91

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1.5x scale

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.