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Finding the Fourth Proportional to 671,215.14, 926,318.23 and 384,778.28

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Solution

The fourth proportional to 671,215.14, 926,318.23 and 384,778.28 is: 531,017.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    671,215.14 : 926,318.23 = 384,778.28 : x
  2. Step 2: Convert to fraction form
    671,215.14/926,318.23 = 384,778.28/x
  3. Step 3: Cross multiply
    671,215.14x = 926,318.23 × 384,778.28
  4. Step 4: Simplify right side
    671,215.14x = 356,427,136,625.89
  5. Step 5: Solve for x
    x = 356,427,136,625.89/671,215.14
  6. Step 6: Final answer
    x = 531,017.72

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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.