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Finding the Fourth Proportional to 615,697.86, 849,804.76 and 361,131.06

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Solution

The fourth proportional to 615,697.86, 849,804.76 and 361,131.06 is: 498,443.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    615,697.86 : 849,804.76 = 361,131.06 : x
  2. Step 2: Convert to fraction form
    615,697.86/849,804.76 = 361,131.06/x
  3. Step 3: Cross multiply
    615,697.86x = 849,804.76 × 361,131.06
  4. Step 4: Simplify right side
    615,697.86x = 306,890,888,619.99
  5. Step 5: Solve for x
    x = 306,890,888,619.99/615,697.86
  6. Step 6: Final answer
    x = 498,443.98

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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.