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Finding the Fourth Proportional to 550,515.27, 761,209.62 and 479,656.47

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Solution

The fourth proportional to 550,515.27, 761,209.62 and 479,656.47 is: 663,231.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    550,515.27 : 761,209.62 = 479,656.47 : x
  2. Step 2: Convert to fraction form
    550,515.27/761,209.62 = 479,656.47/x
  3. Step 3: Cross multiply
    550,515.27x = 761,209.62 × 479,656.47
  4. Step 4: Simplify right side
    550,515.27x = 365,119,119,259.24
  5. Step 5: Solve for x
    x = 365,119,119,259.24/550,515.27
  6. Step 6: Final answer
    x = 663,231.59

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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.