Home / 687,843.90-1,031,911.65-208,032.30

Finding the Fourth Proportional to 687,843.90, 1,031,911.65 and 208,032.30

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Solution

The fourth proportional to 687,843.90, 1,031,911.65 and 208,032.30 is: 312,092.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    687,843.90 : 1,031,911.65 = 208,032.30 : x
  2. Step 2: Convert to fraction form
    687,843.90/1,031,911.65 = 208,032.30/x
  3. Step 3: Cross multiply
    687,843.90x = 1,031,911.65 × 208,032.30
  4. Step 4: Simplify right side
    687,843.90x = 214,670,953,946.30
  5. Step 5: Solve for x
    x = 214,670,953,946.30/687,843.90
  6. Step 6: Final answer
    x = 312,092.55

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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.