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Finding the Fourth Proportional to 605,236.80, 907,855.20 and 402,283.20

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Solution

The fourth proportional to 605,236.80, 907,855.20 and 402,283.20 is: 603,424.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    605,236.80 : 907,855.20 = 402,283.20 : x
  2. Step 2: Convert to fraction form
    605,236.80/907,855.20 = 402,283.20/x
  3. Step 3: Cross multiply
    605,236.80x = 907,855.20 × 402,283.20
  4. Step 4: Simplify right side
    605,236.80x = 365,214,894,992.64
  5. Step 5: Solve for x
    x = 365,214,894,992.64/605,236.80
  6. Step 6: Final answer
    x = 603,424.80

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1.5x scale

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.