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Finding the Fourth Proportional to 528,293.80, 791,041.02 and 278,450.92

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Solution

The fourth proportional to 528,293.80, 791,041.02 and 278,450.92 is: 416,938.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    528,293.80 : 791,041.02 = 278,450.92 : x
  2. Step 2: Convert to fraction form
    528,293.80/791,041.02 = 278,450.92/x
  3. Step 3: Cross multiply
    528,293.80x = 791,041.02 × 278,450.92
  4. Step 4: Simplify right side
    528,293.80x = 220,266,099,776.74
  5. Step 5: Solve for x
    x = 220,266,099,776.74/528,293.80
  6. Step 6: Final answer
    x = 416,938.64

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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.