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Finding the Fourth Proportional to 553,761.71, 764,191.45 and 299,112.90

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Solution

The fourth proportional to 553,761.71, 764,191.45 and 299,112.90 is: 412,775.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    553,761.71 : 764,191.45 = 299,112.90 : x
  2. Step 2: Convert to fraction form
    553,761.71/764,191.45 = 299,112.90/x
  3. Step 3: Cross multiply
    553,761.71x = 764,191.45 × 299,112.90
  4. Step 4: Simplify right side
    553,761.71x = 228,579,518,272.88
  5. Step 5: Solve for x
    x = 228,579,518,272.88/553,761.71
  6. Step 6: Final answer
    x = 412,775.96

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.