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Finding the Fourth Proportional to 615,859.38, 849,869.37 and 343,919.70

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Solution

The fourth proportional to 615,859.38, 849,869.37 and 343,919.70 is: 474,599.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    615,859.38 : 849,869.37 = 343,919.70 : x
  2. Step 2: Convert to fraction form
    615,859.38/849,869.37 = 343,919.70/x
  3. Step 3: Cross multiply
    615,859.38x = 849,869.37 × 343,919.70
  4. Step 4: Simplify right side
    615,859.38x = 292,286,818,769.59
  5. Step 5: Solve for x
    x = 292,286,818,769.59/615,859.38
  6. Step 6: Final answer
    x = 474,599.93

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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.