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Finding the Fourth Proportional to 604,356.40, 907,234.80 and 324,420.40

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Solution

The fourth proportional to 604,356.40, 907,234.80 and 324,420.40 is: 487,006.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    604,356.40 : 907,234.80 = 324,420.40 : x
  2. Step 2: Convert to fraction form
    604,356.40/907,234.80 = 324,420.40/x
  3. Step 3: Cross multiply
    604,356.40x = 907,234.80 × 324,420.40
  4. Step 4: Simplify right side
    604,356.40x = 294,325,476,709.92
  5. Step 5: Solve for x
    x = 294,325,476,709.92/604,356.40
  6. Step 6: Final answer
    x = 487,006.47

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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.