Home / 513,147.16-708,141.31-286,792.66

Finding the Fourth Proportional to 513,147.16, 708,141.31 and 286,792.66

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Solution

The fourth proportional to 513,147.16, 708,141.31 and 286,792.66 is: 395,772.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    513,147.16 : 708,141.31 = 286,792.66 : x
  2. Step 2: Convert to fraction form
    513,147.16/708,141.31 = 286,792.66/x
  3. Step 3: Cross multiply
    513,147.16x = 708,141.31 × 286,792.66
  4. Step 4: Simplify right side
    513,147.16x = 203,089,729,950.79
  5. Step 5: Solve for x
    x = 203,089,729,950.79/513,147.16
  6. Step 6: Final answer
    x = 395,772.88

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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.