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Finding the Fourth Proportional to 634,840.80, 876,037.44 and 348,379.24

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Solution

The fourth proportional to 634,840.80, 876,037.44 and 348,379.24 is: 480,739.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    634,840.80 : 876,037.44 = 348,379.24 : x
  2. Step 2: Convert to fraction form
    634,840.80/876,037.44 = 348,379.24/x
  3. Step 3: Cross multiply
    634,840.80x = 876,037.44 × 348,379.24
  4. Step 4: Simplify right side
    634,840.80x = 305,193,257,558.75
  5. Step 5: Solve for x
    x = 305,193,257,558.75/634,840.80
  6. Step 6: Final answer
    x = 480,739.83

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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.