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Finding the Fourth Proportional to 578,634.12, 798,479.86 and 320,495.77

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Solution

The fourth proportional to 578,634.12, 798,479.86 and 320,495.77 is: 442,264.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    578,634.12 : 798,479.86 = 320,495.77 : x
  2. Step 2: Convert to fraction form
    578,634.12/798,479.86 = 320,495.77/x
  3. Step 3: Cross multiply
    578,634.12x = 798,479.86 × 320,495.77
  4. Step 4: Simplify right side
    578,634.12x = 255,909,413,567.79
  5. Step 5: Solve for x
    x = 255,909,413,567.79/578,634.12
  6. Step 6: Final answer
    x = 442,264.64

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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.