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Finding the Fourth Proportional to 779,224.40, 1,168,836.60 and 761,728.40

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Solution

The fourth proportional to 779,224.40, 1,168,836.60 and 761,728.40 is: 1,142,592.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    779,224.40 : 1,168,836.60 = 761,728.40 : x
  2. Step 2: Convert to fraction form
    779,224.40/1,168,836.60 = 761,728.40/x
  3. Step 3: Cross multiply
    779,224.40x = 1,168,836.60 × 761,728.40
  4. Step 4: Simplify right side
    779,224.40x = 890,336,033,179.44
  5. Step 5: Solve for x
    x = 890,336,033,179.44/779,224.40
  6. Step 6: Final answer
    x = 1,142,592.60

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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.