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Finding the Fourth Proportional to 578,335.91, 798,128.48 and 320,212.83

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Solution

The fourth proportional to 578,335.91, 798,128.48 and 320,212.83 is: 441,907.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    578,335.91 : 798,128.48 = 320,212.83 : x
  2. Step 2: Convert to fraction form
    578,335.91/798,128.48 = 320,212.83/x
  3. Step 3: Cross multiply
    578,335.91x = 798,128.48 × 320,212.83
  4. Step 4: Simplify right side
    578,335.91x = 255,570,977,683.33
  5. Step 5: Solve for x
    x = 255,570,977,683.33/578,335.91
  6. Step 6: Final answer
    x = 441,907.51

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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.