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Finding the Fourth Proportional to 578,764.42, 798,700.44 and 320,646.85

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Solution

The fourth proportional to 578,764.42, 798,700.44 and 320,646.85 is: 442,495.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    578,764.42 : 798,700.44 = 320,646.85 : x
  2. Step 2: Convert to fraction form
    578,764.42/798,700.44 = 320,646.85/x
  3. Step 3: Cross multiply
    578,764.42x = 798,700.44 × 320,646.85
  4. Step 4: Simplify right side
    578,764.42x = 256,100,780,179.61
  5. Step 5: Solve for x
    x = 256,100,780,179.61/578,764.42
  6. Step 6: Final answer
    x = 442,495.72

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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.