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Finding the Fourth Proportional to 908,796.40, 1,363,194.60 and 768,828.40

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Solution

The fourth proportional to 908,796.40, 1,363,194.60 and 768,828.40 is: 1,153,242.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    908,796.40 : 1,363,194.60 = 768,828.40 : x
  2. Step 2: Convert to fraction form
    908,796.40/1,363,194.60 = 768,828.40/x
  3. Step 3: Cross multiply
    908,796.40x = 1,363,194.60 × 768,828.40
  4. Step 4: Simplify right side
    908,796.40x = 1,048,062,723,206.64
  5. Step 5: Solve for x
    x = 1,048,062,723,206.64/908,796.40
  6. Step 6: Final answer
    x = 1,153,242.60

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Similar ratio
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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.