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Finding the Fourth Proportional to 922,768.20, 1,384,346.70 and 291,745.80

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Solution

The fourth proportional to 922,768.20, 1,384,346.70 and 291,745.80 is: 437,680.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    922,768.20 : 1,384,346.70 = 291,745.80 : x
  2. Step 2: Convert to fraction form
    922,768.20/1,384,346.70 = 291,745.80/x
  3. Step 3: Cross multiply
    922,768.20x = 1,384,346.70 × 291,745.80
  4. Step 4: Simplify right side
    922,768.20x = 403,877,335,468.86
  5. Step 5: Solve for x
    x = 403,877,335,468.86/922,768.20
  6. Step 6: Final answer
    x = 437,680.16

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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.