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Finding the Fourth Proportional to 609,830.42, 915,057.88 and 290,343.74

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Solution

The fourth proportional to 609,830.42, 915,057.88 and 290,343.74 is: 435,664.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    609,830.42 : 915,057.88 = 290,343.74 : x
  2. Step 2: Convert to fraction form
    609,830.42/915,057.88 = 290,343.74/x
  3. Step 3: Cross multiply
    609,830.42x = 915,057.88 × 290,343.74
  4. Step 4: Simplify right side
    609,830.42x = 265,681,327,195.67
  5. Step 5: Solve for x
    x = 265,681,327,195.67/609,830.42
  6. Step 6: Final answer
    x = 435,664.27

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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.