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Finding the Fourth Proportional to 553,582.82, 764,000.72 and 338,864.78

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Solution

The fourth proportional to 553,582.82, 764,000.72 and 338,864.78 is: 467,667.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    553,582.82 : 764,000.72 = 338,864.78 : x
  2. Step 2: Convert to fraction form
    553,582.82/764,000.72 = 338,864.78/x
  3. Step 3: Cross multiply
    553,582.82x = 764,000.72 × 338,864.78
  4. Step 4: Simplify right side
    553,582.82x = 258,892,935,902.64
  5. Step 5: Solve for x
    x = 258,892,935,902.64/553,582.82
  6. Step 6: Final answer
    x = 467,667.94

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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.