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Finding the Fourth Proportional to 432,926.30, 649,389.45 and 291,208.70

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Solution

The fourth proportional to 432,926.30, 649,389.45 and 291,208.70 is: 436,813.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    432,926.30 : 649,389.45 = 291,208.70 : x
  2. Step 2: Convert to fraction form
    432,926.30/649,389.45 = 291,208.70/x
  3. Step 3: Cross multiply
    432,926.30x = 649,389.45 × 291,208.70
  4. Step 4: Simplify right side
    432,926.30x = 189,107,857,528.22
  5. Step 5: Solve for x
    x = 189,107,857,528.22/432,926.30
  6. Step 6: Final answer
    x = 436,813.05

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.