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Finding the Fourth Proportional to 674,234.68, 930,472.14 and 387,755.00

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Solution

The fourth proportional to 674,234.68, 930,472.14 and 387,755.00 is: 535,118.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    674,234.68 : 930,472.14 = 387,755.00 : x
  2. Step 2: Convert to fraction form
    674,234.68/930,472.14 = 387,755.00/x
  3. Step 3: Cross multiply
    674,234.68x = 930,472.14 × 387,755.00
  4. Step 4: Simplify right side
    674,234.68x = 360,795,219,993.34
  5. Step 5: Solve for x
    x = 360,795,219,993.34/674,234.68
  6. Step 6: Final answer
    x = 535,118.16

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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.