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Finding the Fourth Proportional to 520,644.66, 781,064.79 and 236,355.18

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Solution

The fourth proportional to 520,644.66, 781,064.79 and 236,355.18 is: 354,577.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    520,644.66 : 781,064.79 = 236,355.18 : x
  2. Step 2: Convert to fraction form
    520,644.66/781,064.79 = 236,355.18/x
  3. Step 3: Cross multiply
    520,644.66x = 781,064.79 × 236,355.18
  4. Step 4: Simplify right side
    520,644.66x = 184,608,709,032.11
  5. Step 5: Solve for x
    x = 184,608,709,032.11/520,644.66
  6. Step 6: Final answer
    x = 354,577.17

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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.