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Finding the Fourth Proportional to 540,422.28, 810,631.80 and 379,837.08

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Solution

The fourth proportional to 540,422.28, 810,631.80 and 379,837.08 is: 569,754.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    540,422.28 : 810,631.80 = 379,837.08 : x
  2. Step 2: Convert to fraction form
    540,422.28/810,631.80 = 379,837.08/x
  3. Step 3: Cross multiply
    540,422.28x = 810,631.80 × 379,837.08
  4. Step 4: Simplify right side
    540,422.28x = 307,908,015,867.14
  5. Step 5: Solve for x
    x = 307,908,015,867.14/540,422.28
  6. Step 6: Final answer
    x = 569,754.48

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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.