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Finding the Fourth Proportional to 605,010.80, 907,807.80 and 427,134.80

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Solution

The fourth proportional to 605,010.80, 907,807.80 and 427,134.80 is: 640,908.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    605,010.80 : 907,807.80 = 427,134.80 : x
  2. Step 2: Convert to fraction form
    605,010.80/907,807.80 = 427,134.80/x
  3. Step 3: Cross multiply
    605,010.80x = 907,807.80 × 427,134.80
  4. Step 4: Simplify right side
    605,010.80x = 387,756,303,091.44
  5. Step 5: Solve for x
    x = 387,756,303,091.44/605,010.80
  6. Step 6: Final answer
    x = 640,908.07

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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.