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Finding the Fourth Proportional to 578,704.52, 798,603.54 and 320,580.66

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Solution

The fourth proportional to 578,704.52, 798,603.54 and 320,580.66 is: 442,396.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    578,704.52 : 798,603.54 = 320,580.66 : x
  2. Step 2: Convert to fraction form
    578,704.52/798,603.54 = 320,580.66/x
  3. Step 3: Cross multiply
    578,704.52x = 798,603.54 × 320,580.66
  4. Step 4: Simplify right side
    578,704.52x = 256,016,849,931.54
  5. Step 5: Solve for x
    x = 256,016,849,931.54/578,704.52
  6. Step 6: Final answer
    x = 442,396.49

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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.