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Finding the Fourth Proportional to 587,338, 810,526.44 and 319,066

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Solution

The fourth proportional to 587,338, 810,526.44 and 319,066 is: 440,311.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    587,338 : 810,526.44 = 319,066 : x
  2. Step 2: Convert to fraction form
    587,338/810,526.44 = 319,066/x
  3. Step 3: Cross multiply
    587,338x = 810,526.44 × 319,066
  4. Step 4: Simplify right side
    587,338x = 258,611,429,105.04
  5. Step 5: Solve for x
    x = 258,611,429,105.04/587,338
  6. Step 6: Final answer
    x = 440,311.08

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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.