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Finding the Fourth Proportional to 535,373.46, 738,816.57 and 309,018.78

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Solution

The fourth proportional to 535,373.46, 738,816.57 and 309,018.78 is: 426,446.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    535,373.46 : 738,816.57 = 309,018.78 : x
  2. Step 2: Convert to fraction form
    535,373.46/738,816.57 = 309,018.78/x
  3. Step 3: Cross multiply
    535,373.46x = 738,816.57 × 309,018.78
  4. Step 4: Simplify right side
    535,373.46x = 228,308,195,105.19
  5. Step 5: Solve for x
    x = 228,308,195,105.19/535,373.46
  6. Step 6: Final answer
    x = 426,446.61

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1.5x scale

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.