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Finding the Fourth Proportional to 578,722.60, 798,608.10 and 320,585.32

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Solution

The fourth proportional to 578,722.60, 798,608.10 and 320,585.32 is: 442,391.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    578,722.60 : 798,608.10 = 320,585.32 : x
  2. Step 2: Convert to fraction form
    578,722.60/798,608.10 = 320,585.32/x
  3. Step 3: Cross multiply
    578,722.60x = 798,608.10 × 320,585.32
  4. Step 4: Simplify right side
    578,722.60x = 256,022,033,293.09
  5. Step 5: Solve for x
    x = 256,022,033,293.09/578,722.60
  6. Step 6: Final answer
    x = 442,391.63

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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.