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Finding the Fourth Proportional to 679,594.70, 937,735.71 and 393,141.44

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Solution

The fourth proportional to 679,594.70, 937,735.71 and 393,141.44 is: 542,474.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    679,594.70 : 937,735.71 = 393,141.44 : x
  2. Step 2: Convert to fraction form
    679,594.70/937,735.71 = 393,141.44/x
  3. Step 3: Cross multiply
    679,594.70x = 937,735.71 × 393,141.44
  4. Step 4: Simplify right side
    679,594.70x = 368,662,767,368.82
  5. Step 5: Solve for x
    x = 368,662,767,368.82/679,594.70
  6. Step 6: Final answer
    x = 542,474.46

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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.