Home / 1,290,644.15-1,781,090.40-717,672.02

Finding the Fourth Proportional to 1,290,644.15, 1,781,090.40 and 717,672.02

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Solution

The fourth proportional to 1,290,644.15, 1,781,090.40 and 717,672.02 is: 990,388.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,290,644.15 : 1,781,090.40 = 717,672.02 : x
  2. Step 2: Convert to fraction form
    1,290,644.15/1,781,090.40 = 717,672.02/x
  3. Step 3: Cross multiply
    1,290,644.15x = 1,781,090.40 × 717,672.02
  4. Step 4: Simplify right side
    1,290,644.15x = 1,278,238,736,265.16
  5. Step 5: Solve for x
    x = 1,278,238,736,265.16/1,290,644.15
  6. Step 6: Final answer
    x = 990,388.20

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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.