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Finding the Fourth Proportional to 609,056.42, 840,304.60 and 354,358.40

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Solution

The fourth proportional to 609,056.42, 840,304.60 and 354,358.40 is: 488,902.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    609,056.42 : 840,304.60 = 354,358.40 : x
  2. Step 2: Convert to fraction form
    609,056.42/840,304.60 = 354,358.40/x
  3. Step 3: Cross multiply
    609,056.42x = 840,304.60 × 354,358.40
  4. Step 4: Simplify right side
    609,056.42x = 297,768,993,568.64
  5. Step 5: Solve for x
    x = 297,768,993,568.64/609,056.42
  6. Step 6: Final answer
    x = 488,902.15

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.