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Finding the Fourth Proportional to 578,763.42, 798,699.06 and 320,645.85

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Solution

The fourth proportional to 578,763.42, 798,699.06 and 320,645.85 is: 442,494.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    578,763.42 : 798,699.06 = 320,645.85 : x
  2. Step 2: Convert to fraction form
    578,763.42/798,699.06 = 320,645.85/x
  3. Step 3: Cross multiply
    578,763.42x = 798,699.06 × 320,645.85
  4. Step 4: Simplify right side
    578,763.42x = 256,099,538,987.90
  5. Step 5: Solve for x
    x = 256,099,538,987.90/578,763.42
  6. Step 6: Final answer
    x = 442,494.34

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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.