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Finding the Fourth Proportional to 615,425.80, 923,397.90 and 335,144.20

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Solution

The fourth proportional to 615,425.80, 923,397.90 and 335,144.20 is: 502,857.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    615,425.80 : 923,397.90 = 335,144.20 : x
  2. Step 2: Convert to fraction form
    615,425.80/923,397.90 = 335,144.20/x
  3. Step 3: Cross multiply
    615,425.80x = 923,397.90 × 335,144.20
  4. Step 4: Simplify right side
    615,425.80x = 309,471,450,477.18
  5. Step 5: Solve for x
    x = 309,471,450,477.18/615,425.80
  6. Step 6: Final answer
    x = 502,857.45

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.