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Finding the Fourth Proportional to 480,707.20, 720,842.10 and 256,009.96

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Solution

The fourth proportional to 480,707.20, 720,842.10 and 256,009.96 is: 383,898.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    480,707.20 : 720,842.10 = 256,009.96 : x
  2. Step 2: Convert to fraction form
    480,707.20/720,842.10 = 256,009.96/x
  3. Step 3: Cross multiply
    480,707.20x = 720,842.10 × 256,009.96
  4. Step 4: Simplify right side
    480,707.20x = 184,542,757,187.32
  5. Step 5: Solve for x
    x = 184,542,757,187.32/480,707.20
  6. Step 6: Final answer
    x = 383,898.47

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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.