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Finding the Fourth Proportional to 522,405.80, 785,279.10 and 485,426.60

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Solution

The fourth proportional to 522,405.80, 785,279.10 and 485,426.60 is: 729,692.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    522,405.80 : 785,279.10 = 485,426.60 : x
  2. Step 2: Convert to fraction form
    522,405.80/785,279.10 = 485,426.60/x
  3. Step 3: Cross multiply
    522,405.80x = 785,279.10 × 485,426.60
  4. Step 4: Simplify right side
    522,405.80x = 381,195,363,564.06
  5. Step 5: Solve for x
    x = 381,195,363,564.06/522,405.80
  6. Step 6: Final answer
    x = 729,692.06

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.