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Finding the Fourth Proportional to 658,962.19, 909,357 and 368,580.54

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Solution

The fourth proportional to 658,962.19, 909,357 and 368,580.54 is: 508,635.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    658,962.19 : 909,357 = 368,580.54 : x
  2. Step 2: Convert to fraction form
    658,962.19/909,357 = 368,580.54/x
  3. Step 3: Cross multiply
    658,962.19x = 909,357 × 368,580.54
  4. Step 4: Simplify right side
    658,962.19x = 335,171,294,112.78
  5. Step 5: Solve for x
    x = 335,171,294,112.78/658,962.19
  6. Step 6: Final answer
    x = 508,635.09

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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.