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Finding the Fourth Proportional to 615,780.90, 922,116.15 and 404,273.70

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Solution

The fourth proportional to 615,780.90, 922,116.15 and 404,273.70 is: 605,389.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    615,780.90 : 922,116.15 = 404,273.70 : x
  2. Step 2: Convert to fraction form
    615,780.90/922,116.15 = 404,273.70/x
  3. Step 3: Cross multiply
    615,780.90x = 922,116.15 × 404,273.70
  4. Step 4: Simplify right side
    615,780.90x = 372,787,307,790.26
  5. Step 5: Solve for x
    x = 372,787,307,790.26/615,780.90
  6. Step 6: Final answer
    x = 605,389.53

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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.