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Finding the Fourth Proportional to 615,928.29, 849,963.67 and 343,988.21

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Solution

The fourth proportional to 615,928.29, 849,963.67 and 343,988.21 is: 474,694.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    615,928.29 : 849,963.67 = 343,988.21 : x
  2. Step 2: Convert to fraction form
    615,928.29/849,963.67 = 343,988.21/x
  3. Step 3: Cross multiply
    615,928.29x = 849,963.67 × 343,988.21
  4. Step 4: Simplify right side
    615,928.29x = 292,377,478,859.69
  5. Step 5: Solve for x
    x = 292,377,478,859.69/615,928.29
  6. Step 6: Final answer
    x = 474,694.02

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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.