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Finding the Fourth Proportional to 572,691.20, 858,777.60 and 256,985.60

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Solution

The fourth proportional to 572,691.20, 858,777.60 and 256,985.60 is: 385,362.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    572,691.20 : 858,777.60 = 256,985.60 : x
  2. Step 2: Convert to fraction form
    572,691.20/858,777.60 = 256,985.60/x
  3. Step 3: Cross multiply
    572,691.20x = 858,777.60 × 256,985.60
  4. Step 4: Simplify right side
    572,691.20x = 220,693,476,802.56
  5. Step 5: Solve for x
    x = 220,693,476,802.56/572,691.20
  6. Step 6: Final answer
    x = 385,362.09

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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.