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Finding the Fourth Proportional to 679,656, 937,926.40 and 377,850

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Solution

The fourth proportional to 679,656, 937,926.40 and 377,850 is: 521,433.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    679,656 : 937,926.40 = 377,850 : x
  2. Step 2: Convert to fraction form
    679,656/937,926.40 = 377,850/x
  3. Step 3: Cross multiply
    679,656x = 937,926.40 × 377,850
  4. Step 4: Simplify right side
    679,656x = 354,395,490,240
  5. Step 5: Solve for x
    x = 354,395,490,240/679,656
  6. Step 6: Final answer
    x = 521,433.62

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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.