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Finding the Fourth Proportional to 659,091.36, 909,540 and 368,699.52

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Solution

The fourth proportional to 659,091.36, 909,540 and 368,699.52 is: 508,801.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    659,091.36 : 909,540 = 368,699.52 : x
  2. Step 2: Convert to fraction form
    659,091.36/909,540 = 368,699.52/x
  3. Step 3: Cross multiply
    659,091.36x = 909,540 × 368,699.52
  4. Step 4: Simplify right side
    659,091.36x = 335,346,961,420.80
  5. Step 5: Solve for x
    x = 335,346,961,420.80/659,091.36
  6. Step 6: Final answer
    x = 508,801.94

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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.