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Finding the Fourth Proportional to 480,709.20, 720,845.10 and 256,011.96

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Solution

The fourth proportional to 480,709.20, 720,845.10 and 256,011.96 is: 383,901.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    480,709.20 : 720,845.10 = 256,011.96 : x
  2. Step 2: Convert to fraction form
    480,709.20/720,845.10 = 256,011.96/x
  3. Step 3: Cross multiply
    480,709.20x = 720,845.10 × 256,011.96
  4. Step 4: Simplify right side
    480,709.20x = 184,544,966,907.40
  5. Step 5: Solve for x
    x = 184,544,966,907.40/480,709.20
  6. Step 6: Final answer
    x = 383,901.47

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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.