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Finding the Fourth Proportional to 540,458.45, 745,906.76 and 311,011.03

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Solution

The fourth proportional to 540,458.45, 745,906.76 and 311,011.03 is: 429,237.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    540,458.45 : 745,906.76 = 311,011.03 : x
  2. Step 2: Convert to fraction form
    540,458.45/745,906.76 = 311,011.03/x
  3. Step 3: Cross multiply
    540,458.45x = 745,906.76 × 311,011.03
  4. Step 4: Simplify right side
    540,458.45x = 231,985,229,711.56
  5. Step 5: Solve for x
    x = 231,985,229,711.56/540,458.45
  6. Step 6: Final answer
    x = 429,237.86

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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.