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Finding the Fourth Proportional to 526,681.57, 789,690.20 and 290,190.32

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Solution

The fourth proportional to 526,681.57, 789,690.20 and 290,190.32 is: 435,102.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    526,681.57 : 789,690.20 = 290,190.32 : x
  2. Step 2: Convert to fraction form
    526,681.57/789,690.20 = 290,190.32/x
  3. Step 3: Cross multiply
    526,681.57x = 789,690.20 × 290,190.32
  4. Step 4: Simplify right side
    526,681.57x = 229,160,453,450.35
  5. Step 5: Solve for x
    x = 229,160,453,450.35/526,681.57
  6. Step 6: Final answer
    x = 435,102.47

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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.