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Finding the Fourth Proportional to 659,887.08, 910,636.20 and 373,399.80

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Solution

The fourth proportional to 659,887.08, 910,636.20 and 373,399.80 is: 515,287.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    659,887.08 : 910,636.20 = 373,399.80 : x
  2. Step 2: Convert to fraction form
    659,887.08/910,636.20 = 373,399.80/x
  3. Step 3: Cross multiply
    659,887.08x = 910,636.20 × 373,399.80
  4. Step 4: Simplify right side
    659,887.08x = 340,031,374,952.76
  5. Step 5: Solve for x
    x = 340,031,374,952.76/659,887.08
  6. Step 6: Final answer
    x = 515,287.21

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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.