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Finding the Fourth Proportional to 587,287.02, 810,434.43 and 319,009.26

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Solution

The fourth proportional to 587,287.02, 810,434.43 and 319,009.26 is: 440,221.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    587,287.02 : 810,434.43 = 319,009.26 : x
  2. Step 2: Convert to fraction form
    587,287.02/810,434.43 = 319,009.26/x
  3. Step 3: Cross multiply
    587,287.02x = 810,434.43 × 319,009.26
  4. Step 4: Simplify right side
    587,287.02x = 258,536,087,792.82
  5. Step 5: Solve for x
    x = 258,536,087,792.82/587,287.02
  6. Step 6: Final answer
    x = 440,221.01

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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.