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Finding the Fourth Proportional to 890,489.60, 1,335,734.40 and 357,736.40

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Solution

The fourth proportional to 890,489.60, 1,335,734.40 and 357,736.40 is: 536,604.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    890,489.60 : 1,335,734.40 = 357,736.40 : x
  2. Step 2: Convert to fraction form
    890,489.60/1,335,734.40 = 357,736.40/x
  3. Step 3: Cross multiply
    890,489.60x = 1,335,734.40 × 357,736.40
  4. Step 4: Simplify right side
    890,489.60x = 477,840,815,612.16
  5. Step 5: Solve for x
    x = 477,840,815,612.16/890,489.60
  6. Step 6: Final answer
    x = 536,604.60

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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.