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Finding the Fourth Proportional to 615,691.98, 849,739.91 and 343,777.50

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Solution

The fourth proportional to 615,691.98, 849,739.91 and 343,777.50 is: 474,460.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    615,691.98 : 849,739.91 = 343,777.50 : x
  2. Step 2: Convert to fraction form
    615,691.98/849,739.91 = 343,777.50/x
  3. Step 3: Cross multiply
    615,691.98x = 849,739.91 × 343,777.50
  4. Step 4: Simplify right side
    615,691.98x = 292,121,460,191.14
  5. Step 5: Solve for x
    x = 292,121,460,191.14/615,691.98
  6. Step 6: Final answer
    x = 474,460.40

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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.