Home / 840,953.57-1,261,596.51-308,479.21

Finding the Fourth Proportional to 840,953.57, 1,261,596.51 and 308,479.21

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Solution

The fourth proportional to 840,953.57, 1,261,596.51 and 308,479.21 is: 462,779.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    840,953.57 : 1,261,596.51 = 308,479.21 : x
  2. Step 2: Convert to fraction form
    840,953.57/1,261,596.51 = 308,479.21/x
  3. Step 3: Cross multiply
    840,953.57x = 1,261,596.51 × 308,479.21
  4. Step 4: Simplify right side
    840,953.57x = 389,176,291,589.57
  5. Step 5: Solve for x
    x = 389,176,291,589.57/840,953.57
  6. Step 6: Final answer
    x = 462,779.76

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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.