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Finding the Fourth Proportional to 665,883.72, 997,054.20 and 520,338.96

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Solution

The fourth proportional to 665,883.72, 997,054.20 and 520,338.96 is: 779,124.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    665,883.72 : 997,054.20 = 520,338.96 : x
  2. Step 2: Convert to fraction form
    665,883.72/997,054.20 = 520,338.96/x
  3. Step 3: Cross multiply
    665,883.72x = 997,054.20 × 520,338.96
  4. Step 4: Simplify right side
    665,883.72x = 518,806,145,491.63
  5. Step 5: Solve for x
    x = 518,806,145,491.63/665,883.72
  6. Step 6: Final answer
    x = 779,124.24

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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.