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Finding the Fourth Proportional to 869,069.70, 1,303,604.55 and 617,127.30

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Solution

The fourth proportional to 869,069.70, 1,303,604.55 and 617,127.30 is: 925,690.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    869,069.70 : 1,303,604.55 = 617,127.30 : x
  2. Step 2: Convert to fraction form
    869,069.70/1,303,604.55 = 617,127.30/x
  3. Step 3: Cross multiply
    869,069.70x = 1,303,604.55 × 617,127.30
  4. Step 4: Simplify right side
    869,069.70x = 804,489,956,209.22
  5. Step 5: Solve for x
    x = 804,489,956,209.22/869,069.70
  6. Step 6: Final answer
    x = 925,690.95

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Double scale
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Similar ratio
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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.