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Finding the Fourth Proportional to 538,140.07, 807,211.11 and 505,257.15

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Solution

The fourth proportional to 538,140.07, 807,211.11 and 505,257.15 is: 757,886.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    538,140.07 : 807,211.11 = 505,257.15 : x
  2. Step 2: Convert to fraction form
    538,140.07/807,211.11 = 505,257.15/x
  3. Step 3: Cross multiply
    538,140.07x = 807,211.11 × 505,257.15
  4. Step 4: Simplify right side
    538,140.07x = 407,849,184,886.94
  5. Step 5: Solve for x
    x = 407,849,184,886.94/538,140.07
  6. Step 6: Final answer
    x = 757,886.67

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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.