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Finding the Fourth Proportional to 615,738.25, 849,860.45 and 361,171.45

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Solution

The fourth proportional to 615,738.25, 849,860.45 and 361,171.45 is: 498,499.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    615,738.25 : 849,860.45 = 361,171.45 : x
  2. Step 2: Convert to fraction form
    615,738.25/849,860.45 = 361,171.45/x
  3. Step 3: Cross multiply
    615,738.25x = 849,860.45 × 361,171.45
  4. Step 4: Simplify right side
    615,738.25x = 306,945,329,802.43
  5. Step 5: Solve for x
    x = 306,945,329,802.43/615,738.25
  6. Step 6: Final answer
    x = 498,499.70

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1.5x scale

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.