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Finding the Fourth Proportional to 679,635.81, 937,921.50 and 373,735.40

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Solution

The fourth proportional to 679,635.81, 937,921.50 and 373,735.40 is: 515,768.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    679,635.81 : 937,921.50 = 373,735.40 : x
  2. Step 2: Convert to fraction form
    679,635.81/937,921.50 = 373,735.40/x
  3. Step 3: Cross multiply
    679,635.81x = 937,921.50 × 373,735.40
  4. Step 4: Simplify right side
    679,635.81x = 350,534,462,281.49
  5. Step 5: Solve for x
    x = 350,534,462,281.49/679,635.81
  6. Step 6: Final answer
    x = 515,768.09

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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.