Home / 915,868.37-1,262,438.49-721,960.07

Finding the Fourth Proportional to 915,868.37, 1,262,438.49 and 721,960.07

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Solution

The fourth proportional to 915,868.37, 1,262,438.49 and 721,960.07 is: 995,154.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    915,868.37 : 1,262,438.49 = 721,960.07 : x
  2. Step 2: Convert to fraction form
    915,868.37/1,262,438.49 = 721,960.07/x
  3. Step 3: Cross multiply
    915,868.37x = 1,262,438.49 × 721,960.07
  4. Step 4: Simplify right side
    915,868.37x = 911,430,183,767.19
  5. Step 5: Solve for x
    x = 911,430,183,767.19/915,868.37
  6. Step 6: Final answer
    x = 995,154.12

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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.