Home / 915,605.34-1,263,277.65-721,411.01

Finding the Fourth Proportional to 915,605.34, 1,263,277.65 and 721,411.01

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Solution

The fourth proportional to 915,605.34, 1,263,277.65 and 721,411.01 is: 995,344.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    915,605.34 : 1,263,277.65 = 721,411.01 : x
  2. Step 2: Convert to fraction form
    915,605.34/1,263,277.65 = 721,411.01/x
  3. Step 3: Cross multiply
    915,605.34x = 1,263,277.65 × 721,411.01
  4. Step 4: Simplify right side
    915,605.34x = 911,342,405,396.93
  5. Step 5: Solve for x
    x = 911,342,405,396.93/915,605.34
  6. Step 6: Final answer
    x = 995,344.14

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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.