Home / 686,756.22-1,029,937.29-207,030.78

Finding the Fourth Proportional to 686,756.22, 1,029,937.29 and 207,030.78

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Solution

The fourth proportional to 686,756.22, 1,029,937.29 and 207,030.78 is: 310,486.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    686,756.22 : 1,029,937.29 = 207,030.78 : x
  2. Step 2: Convert to fraction form
    686,756.22/1,029,937.29 = 207,030.78/x
  3. Step 3: Cross multiply
    686,756.22x = 1,029,937.29 × 207,030.78
  4. Step 4: Simplify right side
    686,756.22x = 213,228,720,499.79
  5. Step 5: Solve for x
    x = 213,228,720,499.79/686,756.22
  6. Step 6: Final answer
    x = 310,486.77

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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.