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Finding the Fourth Proportional to 578,003.57, 797,626.91 and 319,864.98

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Solution

The fourth proportional to 578,003.57, 797,626.91 and 319,864.98 is: 441,403.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    578,003.57 : 797,626.91 = 319,864.98 : x
  2. Step 2: Convert to fraction form
    578,003.57/797,626.91 = 319,864.98/x
  3. Step 3: Cross multiply
    578,003.57x = 797,626.91 × 319,864.98
  4. Step 4: Simplify right side
    578,003.57x = 255,132,914,015.29
  5. Step 5: Solve for x
    x = 255,132,914,015.29/578,003.57
  6. Step 6: Final answer
    x = 441,403.70

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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.