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Finding the Fourth Proportional to 578,265.55, 797,989.32 and 320,154

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Solution

The fourth proportional to 578,265.55, 797,989.32 and 320,154 is: 441,803.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    578,265.55 : 797,989.32 = 320,154 : x
  2. Step 2: Convert to fraction form
    578,265.55/797,989.32 = 320,154/x
  3. Step 3: Cross multiply
    578,265.55x = 797,989.32 × 320,154
  4. Step 4: Simplify right side
    578,265.55x = 255,479,472,755.28
  5. Step 5: Solve for x
    x = 255,479,472,755.28/578,265.55
  6. Step 6: Final answer
    x = 441,803.03

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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.