Home / 692,080.90-1,038,121.35-687,415.30

Finding the Fourth Proportional to 692,080.90, 1,038,121.35 and 687,415.30

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Solution

The fourth proportional to 692,080.90, 1,038,121.35 and 687,415.30 is: 1,031,122.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    692,080.90 : 1,038,121.35 = 687,415.30 : x
  2. Step 2: Convert to fraction form
    692,080.90/1,038,121.35 = 687,415.30/x
  3. Step 3: Cross multiply
    692,080.90x = 1,038,121.35 × 687,415.30
  4. Step 4: Simplify right side
    692,080.90x = 713,620,499,246.66
  5. Step 5: Solve for x
    x = 713,620,499,246.66/692,080.90
  6. Step 6: Final answer
    x = 1,031,122.95

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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.