Home / 772,133.70-1,158,200.55-520,191.30

Finding the Fourth Proportional to 772,133.70, 1,158,200.55 and 520,191.30

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Solution

The fourth proportional to 772,133.70, 1,158,200.55 and 520,191.30 is: 780,286.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    772,133.70 : 1,158,200.55 = 520,191.30 : x
  2. Step 2: Convert to fraction form
    772,133.70/1,158,200.55 = 520,191.30/x
  3. Step 3: Cross multiply
    772,133.70x = 1,158,200.55 × 520,191.30
  4. Step 4: Simplify right side
    772,133.70x = 602,485,849,765.22
  5. Step 5: Solve for x
    x = 602,485,849,765.22/772,133.70
  6. Step 6: Final answer
    x = 780,286.95

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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.