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Finding the Fourth Proportional to 567,087.81, 782,580.75 and 312,439.00

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Solution

The fourth proportional to 567,087.81, 782,580.75 and 312,439.00 is: 431,165.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    567,087.81 : 782,580.75 = 312,439.00 : x
  2. Step 2: Convert to fraction form
    567,087.81/782,580.75 = 312,439.00/x
  3. Step 3: Cross multiply
    567,087.81x = 782,580.75 × 312,439.00
  4. Step 4: Simplify right side
    567,087.81x = 244,508,744,992.80
  5. Step 5: Solve for x
    x = 244,508,744,992.80/567,087.81
  6. Step 6: Final answer
    x = 431,165.58

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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.