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Finding the Fourth Proportional to 671,296.92, 926,319.94 and 380,815.94

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Solution

The fourth proportional to 671,296.92, 926,319.94 and 380,815.94 is: 525,486.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    671,296.92 : 926,319.94 = 380,815.94 : x
  2. Step 2: Convert to fraction form
    671,296.92/926,319.94 = 380,815.94/x
  3. Step 3: Cross multiply
    671,296.92x = 926,319.94 × 380,815.94
  4. Step 4: Simplify right side
    671,296.92x = 352,757,393,211.13
  5. Step 5: Solve for x
    x = 352,757,393,211.13/671,296.92
  6. Step 6: Final answer
    x = 525,486.39

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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.