Home / 672,442.90-1,008,664.35-621,121.30

Finding the Fourth Proportional to 672,442.90, 1,008,664.35 and 621,121.30

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Solution

The fourth proportional to 672,442.90, 1,008,664.35 and 621,121.30 is: 931,681.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    672,442.90 : 1,008,664.35 = 621,121.30 : x
  2. Step 2: Convert to fraction form
    672,442.90/1,008,664.35 = 621,121.30/x
  3. Step 3: Cross multiply
    672,442.90x = 1,008,664.35 × 621,121.30
  4. Step 4: Simplify right side
    672,442.90x = 626,502,912,335.66
  5. Step 5: Solve for x
    x = 626,502,912,335.66/672,442.90
  6. Step 6: Final answer
    x = 931,681.95

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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.