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Finding the Fourth Proportional to 922,751.20, 1,384,126.80 and 291,858.40

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Solution

The fourth proportional to 922,751.20, 1,384,126.80 and 291,858.40 is: 437,787.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    922,751.20 : 1,384,126.80 = 291,858.40 : x
  2. Step 2: Convert to fraction form
    922,751.20/1,384,126.80 = 291,858.40/x
  3. Step 3: Cross multiply
    922,751.20x = 1,384,126.80 × 291,858.40
  4. Step 4: Simplify right side
    922,751.20x = 403,969,033,245.12
  5. Step 5: Solve for x
    x = 403,969,033,245.12/922,751.20
  6. Step 6: Final answer
    x = 437,787.60

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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.