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Finding the Fourth Proportional to 522,480.78, 784,070.69 and 190,056.78

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Solution

The fourth proportional to 522,480.78, 784,070.69 and 190,056.78 is: 285,212.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    522,480.78 : 784,070.69 = 190,056.78 : x
  2. Step 2: Convert to fraction form
    522,480.78/784,070.69 = 190,056.78/x
  3. Step 3: Cross multiply
    522,480.78x = 784,070.69 × 190,056.78
  4. Step 4: Simplify right side
    522,480.78x = 149,017,949,683.49
  5. Step 5: Solve for x
    x = 149,017,949,683.49/522,480.78
  6. Step 6: Final answer
    x = 285,212.31

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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.