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Finding the Fourth Proportional to 517,492.20, 774,632.88 and 280,246.44

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Solution

The fourth proportional to 517,492.20, 774,632.88 and 280,246.44 is: 419,500.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    517,492.20 : 774,632.88 = 280,246.44 : x
  2. Step 2: Convert to fraction form
    517,492.20/774,632.88 = 280,246.44/x
  3. Step 3: Cross multiply
    517,492.20x = 774,632.88 × 280,246.44
  4. Step 4: Simplify right side
    517,492.20x = 217,088,106,926.95
  5. Step 5: Solve for x
    x = 217,088,106,926.95/517,492.20
  6. Step 6: Final answer
    x = 419,500.25

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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.