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Finding the Fourth Proportional to 567,088.56, 782,581.79 and 312,439.75

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Solution

The fourth proportional to 567,088.56, 782,581.79 and 312,439.75 is: 431,166.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    567,088.56 : 782,581.79 = 312,439.75 : x
  2. Step 2: Convert to fraction form
    567,088.56/782,581.79 = 312,439.75/x
  3. Step 3: Cross multiply
    567,088.56x = 782,581.79 × 312,439.75
  4. Step 4: Simplify right side
    567,088.56x = 244,509,653,347.05
  5. Step 5: Solve for x
    x = 244,509,653,347.05/567,088.56
  6. Step 6: Final answer
    x = 431,166.61

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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.