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Finding the Fourth Proportional to 670,573.80, 925,321.86 and 384,105.96

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Solution

The fourth proportional to 670,573.80, 925,321.86 and 384,105.96 is: 530,026.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    670,573.80 : 925,321.86 = 384,105.96 : x
  2. Step 2: Convert to fraction form
    670,573.80/925,321.86 = 384,105.96/x
  3. Step 3: Cross multiply
    670,573.80x = 925,321.86 × 384,105.96
  4. Step 4: Simplify right side
    670,573.80x = 355,421,641,344.29
  5. Step 5: Solve for x
    x = 355,421,641,344.29/670,573.80
  6. Step 6: Final answer
    x = 530,026.14

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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.