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Finding the Fourth Proportional to 659,425.86, 909,988.13 and 365,088.69

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Solution

The fourth proportional to 659,425.86, 909,988.13 and 365,088.69 is: 503,811.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    659,425.86 : 909,988.13 = 365,088.69 : x
  2. Step 2: Convert to fraction form
    659,425.86/909,988.13 = 365,088.69/x
  3. Step 3: Cross multiply
    659,425.86x = 909,988.13 × 365,088.69
  4. Step 4: Simplify right side
    659,425.86x = 332,226,374,297.25
  5. Step 5: Solve for x
    x = 332,226,374,297.25/659,425.86
  6. Step 6: Final answer
    x = 503,811.56

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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.