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Finding the Fourth Proportional to 578,646.40, 867,889.60 and 179,561.60

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Solution

The fourth proportional to 578,646.40, 867,889.60 and 179,561.60 is: 269,317.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    578,646.40 : 867,889.60 = 179,561.60 : x
  2. Step 2: Convert to fraction form
    578,646.40/867,889.60 = 179,561.60/x
  3. Step 3: Cross multiply
    578,646.40x = 867,889.60 × 179,561.60
  4. Step 4: Simplify right side
    578,646.40x = 155,839,645,199.36
  5. Step 5: Solve for x
    x = 155,839,645,199.36/578,646.40
  6. Step 6: Final answer
    x = 269,317.57

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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.