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Finding the Fourth Proportional to 615,513.36, 849,451.14 and 343,634.70

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Solution

The fourth proportional to 615,513.36, 849,451.14 and 343,634.70 is: 474,239.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    615,513.36 : 849,451.14 = 343,634.70 : x
  2. Step 2: Convert to fraction form
    615,513.36/849,451.14 = 343,634.70/x
  3. Step 3: Cross multiply
    615,513.36x = 849,451.14 × 343,634.70
  4. Step 4: Simplify right side
    615,513.36x = 291,900,887,658.56
  5. Step 5: Solve for x
    x = 291,900,887,658.56/615,513.36
  6. Step 6: Final answer
    x = 474,239.73

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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.