Home / 687,810.90-1,031,862.15-207,999.30

Finding the Fourth Proportional to 687,810.90, 1,031,862.15 and 207,999.30

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Solution

The fourth proportional to 687,810.90, 1,031,862.15 and 207,999.30 is: 312,043.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    687,810.90 : 1,031,862.15 = 207,999.30 : x
  2. Step 2: Convert to fraction form
    687,810.90/1,031,862.15 = 207,999.30/x
  3. Step 3: Cross multiply
    687,810.90x = 1,031,862.15 × 207,999.30
  4. Step 4: Simplify right side
    687,810.90x = 214,626,604,896.50
  5. Step 5: Solve for x
    x = 214,626,604,896.50/687,810.90
  6. Step 6: Final answer
    x = 312,043.04

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1.5x scale

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.