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Finding the Fourth Proportional to 645,627.60, 968,149.80 and 290,458.80

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Solution

The fourth proportional to 645,627.60, 968,149.80 and 290,458.80 is: 435,557.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    645,627.60 : 968,149.80 = 290,458.80 : x
  2. Step 2: Convert to fraction form
    645,627.60/968,149.80 = 290,458.80/x
  3. Step 3: Cross multiply
    645,627.60x = 968,149.80 × 290,458.80
  4. Step 4: Simplify right side
    645,627.60x = 281,207,629,128.24
  5. Step 5: Solve for x
    x = 281,207,629,128.24/645,627.60
  6. Step 6: Final answer
    x = 435,557.01

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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.