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Finding the Fourth Proportional to 707,353.60, 976,118.10 and 385,057

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Solution

The fourth proportional to 707,353.60, 976,118.10 and 385,057 is: 531,362.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    707,353.60 : 976,118.10 = 385,057 : x
  2. Step 2: Convert to fraction form
    707,353.60/976,118.10 = 385,057/x
  3. Step 3: Cross multiply
    707,353.60x = 976,118.10 × 385,057
  4. Step 4: Simplify right side
    707,353.60x = 375,861,107,231.70
  5. Step 5: Solve for x
    x = 375,861,107,231.70/707,353.60
  6. Step 6: Final answer
    x = 531,362.40

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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.