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Finding the Fourth Proportional to 671,213.64, 926,316.17 and 384,776.79

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Solution

The fourth proportional to 671,213.64, 926,316.17 and 384,776.79 is: 531,015.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    671,213.64 : 926,316.17 = 384,776.79 : x
  2. Step 2: Convert to fraction form
    671,213.64/926,316.17 = 384,776.79/x
  3. Step 3: Cross multiply
    671,213.64x = 926,316.17 × 384,776.79
  4. Step 4: Simplify right side
    671,213.64x = 356,424,960,493.81
  5. Step 5: Solve for x
    x = 356,424,960,493.81/671,213.64
  6. Step 6: Final answer
    x = 531,015.67

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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.