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Finding the Fourth Proportional to 671,645.92, 926,835.12 and 385,178.08

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Solution

The fourth proportional to 671,645.92, 926,835.12 and 385,178.08 is: 531,524.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    671,645.92 : 926,835.12 = 385,178.08 : x
  2. Step 2: Convert to fraction form
    671,645.92/926,835.12 = 385,178.08/x
  3. Step 3: Cross multiply
    671,645.92x = 926,835.12 × 385,178.08
  4. Step 4: Simplify right side
    671,645.92x = 356,996,571,998.17
  5. Step 5: Solve for x
    x = 356,996,571,998.17/671,645.92
  6. Step 6: Final answer
    x = 531,524.96

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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.