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Finding the Fourth Proportional to 578,704.77, 798,603.89 and 320,580.90

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Solution

The fourth proportional to 578,704.77, 798,603.89 and 320,580.90 is: 442,396.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    578,704.77 : 798,603.89 = 320,580.90 : x
  2. Step 2: Convert to fraction form
    578,704.77/798,603.89 = 320,580.90/x
  3. Step 3: Cross multiply
    578,704.77x = 798,603.89 × 320,580.90
  4. Step 4: Simplify right side
    578,704.77x = 256,017,152,196.80
  5. Step 5: Solve for x
    x = 256,017,152,196.80/578,704.77
  6. Step 6: Final answer
    x = 442,396.82

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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.