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Finding the Fourth Proportional to 671,646.92, 926,836.50 and 385,179.08

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Solution

The fourth proportional to 671,646.92, 926,836.50 and 385,179.08 is: 531,526.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    671,646.92 : 926,836.50 = 385,179.08 : x
  2. Step 2: Convert to fraction form
    671,646.92/926,836.50 = 385,179.08/x
  3. Step 3: Cross multiply
    671,646.92x = 926,836.50 × 385,179.08
  4. Step 4: Simplify right side
    671,646.92x = 356,998,030,380.42
  5. Step 5: Solve for x
    x = 356,998,030,380.42/671,646.92
  6. Step 6: Final answer
    x = 531,526.34

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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.