Home / 634,319.52-949,496.40-409,379.28

Finding the Fourth Proportional to 634,319.52, 949,496.40 and 409,379.28

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Solution

The fourth proportional to 634,319.52, 949,496.40 and 409,379.28 is: 612,789.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    634,319.52 : 949,496.40 = 409,379.28 : x
  2. Step 2: Convert to fraction form
    634,319.52/949,496.40 = 409,379.28/x
  3. Step 3: Cross multiply
    634,319.52x = 949,496.40 × 409,379.28
  4. Step 4: Simplify right side
    634,319.52x = 388,704,152,594.59
  5. Step 5: Solve for x
    x = 388,704,152,594.59/634,319.52
  6. Step 6: Final answer
    x = 612,789.20

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.