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Finding the Fourth Proportional to 646,507.44, 892,200.60 and 356,140.08

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Solution

The fourth proportional to 646,507.44, 892,200.60 and 356,140.08 is: 491,484.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    646,507.44 : 892,200.60 = 356,140.08 : x
  2. Step 2: Convert to fraction form
    646,507.44/892,200.60 = 356,140.08/x
  3. Step 3: Cross multiply
    646,507.44x = 892,200.60 × 356,140.08
  4. Step 4: Simplify right side
    646,507.44x = 317,748,393,060.05
  5. Step 5: Solve for x
    x = 317,748,393,060.05/646,507.44
  6. Step 6: Final answer
    x = 491,484.51

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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.