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Finding the Fourth Proportional to 665,756.50, 918,743.98 and 363,950.50

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Solution

The fourth proportional to 665,756.50, 918,743.98 and 363,950.50 is: 502,251.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    665,756.50 : 918,743.98 = 363,950.50 : x
  2. Step 2: Convert to fraction form
    665,756.50/918,743.98 = 363,950.50/x
  3. Step 3: Cross multiply
    665,756.50x = 918,743.98 × 363,950.50
  4. Step 4: Simplify right side
    665,756.50x = 334,377,330,892.99
  5. Step 5: Solve for x
    x = 334,377,330,892.99/665,756.50
  6. Step 6: Final answer
    x = 502,251.70

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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.