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Finding the Fourth Proportional to 606,709.20, 910,063.80 and 291,781.20

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Solution

The fourth proportional to 606,709.20, 910,063.80 and 291,781.20 is: 437,671.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    606,709.20 : 910,063.80 = 291,781.20 : x
  2. Step 2: Convert to fraction form
    606,709.20/910,063.80 = 291,781.20/x
  3. Step 3: Cross multiply
    606,709.20x = 910,063.80 × 291,781.20
  4. Step 4: Simplify right side
    606,709.20x = 265,539,507,640.56
  5. Step 5: Solve for x
    x = 265,539,507,640.56/606,709.20
  6. Step 6: Final answer
    x = 437,671.80

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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.