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Finding the Fourth Proportional to 553,584.32, 764,002.79 and 338,866.28

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Solution

The fourth proportional to 553,584.32, 764,002.79 and 338,866.28 is: 467,670.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    553,584.32 : 764,002.79 = 338,866.28 : x
  2. Step 2: Convert to fraction form
    553,584.32/764,002.79 = 338,866.28/x
  3. Step 3: Cross multiply
    553,584.32x = 764,002.79 × 338,866.28
  4. Step 4: Simplify right side
    553,584.32x = 258,894,783,356.92
  5. Step 5: Solve for x
    x = 258,894,783,356.92/553,584.32
  6. Step 6: Final answer
    x = 467,670.01

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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.