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Finding the Fourth Proportional to 633,871.34, 874,737.42 and 347,390.74

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Solution

The fourth proportional to 633,871.34, 874,737.42 and 347,390.74 is: 479,396.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    633,871.34 : 874,737.42 = 347,390.74 : x
  2. Step 2: Convert to fraction form
    633,871.34/874,737.42 = 347,390.74/x
  3. Step 3: Cross multiply
    633,871.34x = 874,737.42 × 347,390.74
  4. Step 4: Simplify right side
    633,871.34x = 303,875,679,639.49
  5. Step 5: Solve for x
    x = 303,875,679,639.49/633,871.34
  6. Step 6: Final answer
    x = 479,396.46

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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.