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Finding the Fourth Proportional to 587,618.88, 810,914.40 and 319,346.88

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Solution

The fourth proportional to 587,618.88, 810,914.40 and 319,346.88 is: 440,698.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    587,618.88 : 810,914.40 = 319,346.88 : x
  2. Step 2: Convert to fraction form
    587,618.88/810,914.40 = 319,346.88/x
  3. Step 3: Cross multiply
    587,618.88x = 810,914.40 × 319,346.88
  4. Step 4: Simplify right side
    587,618.88x = 258,962,983,587.07
  5. Step 5: Solve for x
    x = 258,962,983,587.07/587,618.88
  6. Step 6: Final answer
    x = 440,698.88

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