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Finding the Fourth Proportional to 671,212.39, 926,314.43 and 384,775.53

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Solution

The fourth proportional to 671,212.39, 926,314.43 and 384,775.53 is: 531,013.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    671,212.39 : 926,314.43 = 384,775.53 : x
  2. Step 2: Convert to fraction form
    671,212.39/926,314.43 = 384,775.53/x
  3. Step 3: Cross multiply
    671,212.39x = 926,314.43 × 384,775.53
  4. Step 4: Simplify right side
    671,212.39x = 356,423,125,749.90
  5. Step 5: Solve for x
    x = 356,423,125,749.90/671,212.39
  6. Step 6: Final answer
    x = 531,013.93

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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.