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Finding the Fourth Proportional to 655,777.86, 904,955.76 and 369,291.78

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Solution

The fourth proportional to 655,777.86, 904,955.76 and 369,291.78 is: 509,612.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    655,777.86 : 904,955.76 = 369,291.78 : x
  2. Step 2: Convert to fraction form
    655,777.86/904,955.76 = 369,291.78/x
  3. Step 3: Cross multiply
    655,777.86x = 904,955.76 × 369,291.78
  4. Step 4: Simplify right side
    655,777.86x = 334,192,723,431.65
  5. Step 5: Solve for x
    x = 334,192,723,431.65/655,777.86
  6. Step 6: Final answer
    x = 509,612.70

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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.