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Finding the Fourth Proportional to 693,375, 956,952.50 and 399,018.64

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Solution

The fourth proportional to 693,375, 956,952.50 and 399,018.64 is: 550,700.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    693,375 : 956,952.50 = 399,018.64 : x
  2. Step 2: Convert to fraction form
    693,375/956,952.50 = 399,018.64/x
  3. Step 3: Cross multiply
    693,375x = 956,952.50 × 399,018.64
  4. Step 4: Simplify right side
    693,375x = 381,841,885,094.60
  5. Step 5: Solve for x
    x = 381,841,885,094.60/693,375
  6. Step 6: Final answer
    x = 550,700.39

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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.