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Finding the Fourth Proportional to 666,901.50, 920,324.13 and 365,095.50

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Solution

The fourth proportional to 666,901.50, 920,324.13 and 365,095.50 is: 503,831.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    666,901.50 : 920,324.13 = 365,095.50 : x
  2. Step 2: Convert to fraction form
    666,901.50/920,324.13 = 365,095.50/x
  3. Step 3: Cross multiply
    666,901.50x = 920,324.13 × 365,095.50
  4. Step 4: Simplify right side
    666,901.50x = 336,006,198,404.42
  5. Step 5: Solve for x
    x = 336,006,198,404.42/666,901.50
  6. Step 6: Final answer
    x = 503,831.82

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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.