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Finding the Fourth Proportional to 615,873.38, 849,896.30 and 343,938.40

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Solution

The fourth proportional to 615,873.38, 849,896.30 and 343,938.40 is: 474,629.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    615,873.38 : 849,896.30 = 343,938.40 : x
  2. Step 2: Convert to fraction form
    615,873.38/849,896.30 = 343,938.40/x
  3. Step 3: Cross multiply
    615,873.38x = 849,896.30 × 343,938.40
  4. Step 4: Simplify right side
    615,873.38x = 292,311,973,587.92
  5. Step 5: Solve for x
    x = 292,311,973,587.92/615,873.38
  6. Step 6: Final answer
    x = 474,629.99

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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.