Home / 1,261,078.90-1,740,330.84-688,150.51

Finding the Fourth Proportional to 1,261,078.90, 1,740,330.84 and 688,150.51

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Solution

The fourth proportional to 1,261,078.90, 1,740,330.84 and 688,150.51 is: 949,670.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,261,078.90 : 1,740,330.84 = 688,150.51 : x
  2. Step 2: Convert to fraction form
    1,261,078.90/1,740,330.84 = 688,150.51/x
  3. Step 3: Cross multiply
    1,261,078.90x = 1,740,330.84 × 688,150.51
  4. Step 4: Simplify right side
    1,261,078.90x = 1,197,609,555,114.73
  5. Step 5: Solve for x
    x = 1,197,609,555,114.73/1,261,078.90
  6. Step 6: Final answer
    x = 949,670.60

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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.