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Finding the Fourth Proportional to 621,899, 932,811.42 and 365,875.40

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Solution

The fourth proportional to 621,899, 932,811.42 and 365,875.40 is: 548,791.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    621,899 : 932,811.42 = 365,875.40 : x
  2. Step 2: Convert to fraction form
    621,899/932,811.42 = 365,875.40/x
  3. Step 3: Cross multiply
    621,899x = 932,811.42 × 365,875.40
  4. Step 4: Simplify right side
    621,899x = 341,292,751,417.07
  5. Step 5: Solve for x
    x = 341,292,751,417.07/621,899
  6. Step 6: Final answer
    x = 548,791.29

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.