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Finding the Fourth Proportional to 578,079.66, 797,743.98 and 319,957.20

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Solution

The fourth proportional to 578,079.66, 797,743.98 and 319,957.20 is: 441,537.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    578,079.66 : 797,743.98 = 319,957.20 : x
  2. Step 2: Convert to fraction form
    578,079.66/797,743.98 = 319,957.20/x
  3. Step 3: Cross multiply
    578,079.66x = 797,743.98 × 319,957.20
  4. Step 4: Simplify right side
    578,079.66x = 255,243,930,157.66
  5. Step 5: Solve for x
    x = 255,243,930,157.66/578,079.66
  6. Step 6: Final answer
    x = 441,537.64

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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.