Home / 759,820.80-1,139,731.20-316,531.20

Finding the Fourth Proportional to 759,820.80, 1,139,731.20 and 316,531.20

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Solution

The fourth proportional to 759,820.80, 1,139,731.20 and 316,531.20 is: 474,796.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    759,820.80 : 1,139,731.20 = 316,531.20 : x
  2. Step 2: Convert to fraction form
    759,820.80/1,139,731.20 = 316,531.20/x
  3. Step 3: Cross multiply
    759,820.80x = 1,139,731.20 × 316,531.20
  4. Step 4: Simplify right side
    759,820.80x = 360,760,484,413.44
  5. Step 5: Solve for x
    x = 360,760,484,413.44/759,820.80
  6. Step 6: Final answer
    x = 474,796.80

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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.