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Finding the Fourth Proportional to 638,039.66, 880,556.78 and 476,614.46

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Solution

The fourth proportional to 638,039.66, 880,556.78 and 476,614.46 is: 657,774.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,039.66 : 880,556.78 = 476,614.46 : x
  2. Step 2: Convert to fraction form
    638,039.66/880,556.78 = 476,614.46/x
  3. Step 3: Cross multiply
    638,039.66x = 880,556.78 × 476,614.46
  4. Step 4: Simplify right side
    638,039.66x = 419,686,087,413.18
  5. Step 5: Solve for x
    x = 419,686,087,413.18/638,039.66
  6. Step 6: Final answer
    x = 657,774.30

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.