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Finding the Fourth Proportional to 605,232.80, 907,849.20 and 402,279.20

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Solution

The fourth proportional to 605,232.80, 907,849.20 and 402,279.20 is: 603,418.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    605,232.80 : 907,849.20 = 402,279.20 : x
  2. Step 2: Convert to fraction form
    605,232.80/907,849.20 = 402,279.20/x
  3. Step 3: Cross multiply
    605,232.80x = 907,849.20 × 402,279.20
  4. Step 4: Simplify right side
    605,232.80x = 365,208,849,896.64
  5. Step 5: Solve for x
    x = 365,208,849,896.64/605,232.80
  6. Step 6: Final answer
    x = 603,418.80

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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.