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Finding the Fourth Proportional to 578,745.54, 798,674.58 and 320,630.13

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Solution

The fourth proportional to 578,745.54, 798,674.58 and 320,630.13 is: 442,472.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    578,745.54 : 798,674.58 = 320,630.13 : x
  2. Step 2: Convert to fraction form
    578,745.54/798,674.58 = 320,630.13/x
  3. Step 3: Cross multiply
    578,745.54x = 798,674.58 × 320,630.13
  4. Step 4: Simplify right side
    578,745.54x = 256,079,134,413.10
  5. Step 5: Solve for x
    x = 256,079,134,413.10/578,745.54
  6. Step 6: Final answer
    x = 442,472.76

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1.5x scale

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.