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Finding the Fourth Proportional to 679,447.13, 937,695.35 and 377,699.45

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Solution

The fourth proportional to 679,447.13, 937,695.35 and 377,699.45 is: 521,257.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    679,447.13 : 937,695.35 = 377,699.45 : x
  2. Step 2: Convert to fraction form
    679,447.13/937,695.35 = 377,699.45/x
  3. Step 3: Cross multiply
    679,447.13x = 937,695.35 × 377,699.45
  4. Step 4: Simplify right side
    679,447.13x = 354,167,014,218.33
  5. Step 5: Solve for x
    x = 354,167,014,218.33/679,447.13
  6. Step 6: Final answer
    x = 521,257.65

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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.