Home / 687,772.80-1,031,659.20-651,031.20

Finding the Fourth Proportional to 687,772.80, 1,031,659.20 and 651,031.20

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Solution

The fourth proportional to 687,772.80, 1,031,659.20 and 651,031.20 is: 976,546.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    687,772.80 : 1,031,659.20 = 651,031.20 : x
  2. Step 2: Convert to fraction form
    687,772.80/1,031,659.20 = 651,031.20/x
  3. Step 3: Cross multiply
    687,772.80x = 1,031,659.20 × 651,031.20
  4. Step 4: Simplify right side
    687,772.80x = 671,642,326,967.04
  5. Step 5: Solve for x
    x = 671,642,326,967.04/687,772.80
  6. Step 6: Final answer
    x = 976,546.80

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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.