Home / 687,580.30-1,031,368.02-214,265.98

Finding the Fourth Proportional to 687,580.30, 1,031,368.02 and 214,265.98

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Solution

The fourth proportional to 687,580.30, 1,031,368.02 and 214,265.98 is: 321,398.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    687,580.30 : 1,031,368.02 = 214,265.98 : x
  2. Step 2: Convert to fraction form
    687,580.30/1,031,368.02 = 214,265.98/x
  3. Step 3: Cross multiply
    687,580.30x = 1,031,368.02 × 214,265.98
  4. Step 4: Simplify right side
    687,580.30x = 220,987,079,545.96
  5. Step 5: Solve for x
    x = 220,987,079,545.96/687,580.30
  6. Step 6: Final answer
    x = 321,398.21

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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.