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Finding the Fourth Proportional to 532,360.78, 734,655.89 and 290,640.58

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Solution

The fourth proportional to 532,360.78, 734,655.89 and 290,640.58 is: 401,082.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    532,360.78 : 734,655.89 = 290,640.58 : x
  2. Step 2: Convert to fraction form
    532,360.78/734,655.89 = 290,640.58/x
  3. Step 3: Cross multiply
    532,360.78x = 734,655.89 × 290,640.58
  4. Step 4: Simplify right side
    532,360.78x = 213,520,812,859.98
  5. Step 5: Solve for x
    x = 213,520,812,859.98/532,360.78
  6. Step 6: Final answer
    x = 401,082.92

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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.