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Finding the Fourth Proportional to 572,695.20, 858,783.60 and 256,989.60

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Solution

The fourth proportional to 572,695.20, 858,783.60 and 256,989.60 is: 385,368.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    572,695.20 : 858,783.60 = 256,989.60 : x
  2. Step 2: Convert to fraction form
    572,695.20/858,783.60 = 256,989.60/x
  3. Step 3: Cross multiply
    572,695.20x = 858,783.60 × 256,989.60
  4. Step 4: Simplify right side
    572,695.20x = 220,698,453,850.56
  5. Step 5: Solve for x
    x = 220,698,453,850.56/572,695.20
  6. Step 6: Final answer
    x = 385,368.09

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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.