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Finding the Fourth Proportional to 840,577.60, 1,260,866.40 and 740,850.40

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Solution

The fourth proportional to 840,577.60, 1,260,866.40 and 740,850.40 is: 1,111,275.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    840,577.60 : 1,260,866.40 = 740,850.40 : x
  2. Step 2: Convert to fraction form
    840,577.60/1,260,866.40 = 740,850.40/x
  3. Step 3: Cross multiply
    840,577.60x = 1,260,866.40 × 740,850.40
  4. Step 4: Simplify right side
    840,577.60x = 934,113,376,786.56
  5. Step 5: Solve for x
    x = 934,113,376,786.56/840,577.60
  6. Step 6: Final answer
    x = 1,111,275.60

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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.