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Finding the Fourth Proportional to 611,734.40, 844,164.90 and 339,819.80

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Solution

The fourth proportional to 611,734.40, 844,164.90 and 339,819.80 is: 468,935.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    611,734.40 : 844,164.90 = 339,819.80 : x
  2. Step 2: Convert to fraction form
    611,734.40/844,164.90 = 339,819.80/x
  3. Step 3: Cross multiply
    611,734.40x = 844,164.90 × 339,819.80
  4. Step 4: Simplify right side
    611,734.40x = 286,863,947,485.02
  5. Step 5: Solve for x
    x = 286,863,947,485.02/611,734.40
  6. Step 6: Final answer
    x = 468,935.45

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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.