Home / 912,367.30-1,368,159.51-313,388.74

Finding the Fourth Proportional to 912,367.30, 1,368,159.51 and 313,388.74

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Solution

The fourth proportional to 912,367.30, 1,368,159.51 and 313,388.74 is: 469,948.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    912,367.30 : 1,368,159.51 = 313,388.74 : x
  2. Step 2: Convert to fraction form
    912,367.30/1,368,159.51 = 313,388.74/x
  3. Step 3: Cross multiply
    912,367.30x = 1,368,159.51 × 313,388.74
  4. Step 4: Simplify right side
    912,367.30x = 428,765,784,957.92
  5. Step 5: Solve for x
    x = 428,765,784,957.92/912,367.30
  6. Step 6: Final answer
    x = 469,948.65

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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.