Home / 826,620.90-1,239,931.35-742,640.10

Finding the Fourth Proportional to 826,620.90, 1,239,931.35 and 742,640.10

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Solution

The fourth proportional to 826,620.90, 1,239,931.35 and 742,640.10 is: 1,113,960.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    826,620.90 : 1,239,931.35 = 742,640.10 : x
  2. Step 2: Convert to fraction form
    826,620.90/1,239,931.35 = 742,640.10/x
  3. Step 3: Cross multiply
    826,620.90x = 1,239,931.35 × 742,640.10
  4. Step 4: Simplify right side
    826,620.90x = 920,822,741,757.14
  5. Step 5: Solve for x
    x = 920,822,741,757.14/826,620.90
  6. Step 6: Final answer
    x = 1,113,960.15

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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.