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Finding the Fourth Proportional to 700,318.65, 966,427.02 and 394,393.80

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Solution

The fourth proportional to 700,318.65, 966,427.02 and 394,393.80 is: 544,256.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    700,318.65 : 966,427.02 = 394,393.80 : x
  2. Step 2: Convert to fraction form
    700,318.65/966,427.02 = 394,393.80/x
  3. Step 3: Cross multiply
    700,318.65x = 966,427.02 × 394,393.80
  4. Step 4: Simplify right side
    700,318.65x = 381,152,824,840.48
  5. Step 5: Solve for x
    x = 381,152,824,840.48/700,318.65
  6. Step 6: Final answer
    x = 544,256.28

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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.