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Finding the Fourth Proportional to 659,018.22, 909,416.28 and 387,114

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Solution

The fourth proportional to 659,018.22, 909,416.28 and 387,114 is: 534,200.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    659,018.22 : 909,416.28 = 387,114 : x
  2. Step 2: Convert to fraction form
    659,018.22/909,416.28 = 387,114/x
  3. Step 3: Cross multiply
    659,018.22x = 909,416.28 × 387,114
  4. Step 4: Simplify right side
    659,018.22x = 352,047,773,815.92
  5. Step 5: Solve for x
    x = 352,047,773,815.92/659,018.22
  6. Step 6: Final answer
    x = 534,200.37

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.