Home / 686,893.71-1,030,557.84-308,139.33

Finding the Fourth Proportional to 686,893.71, 1,030,557.84 and 308,139.33

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Solution

The fourth proportional to 686,893.71, 1,030,557.84 and 308,139.33 is: 462,306.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    686,893.71 : 1,030,557.84 = 308,139.33 : x
  2. Step 2: Convert to fraction form
    686,893.71/1,030,557.84 = 308,139.33/x
  3. Step 3: Cross multiply
    686,893.71x = 1,030,557.84 × 308,139.33
  4. Step 4: Simplify right side
    686,893.71x = 317,555,402,343.85
  5. Step 5: Solve for x
    x = 317,555,402,343.85/686,893.71
  6. Step 6: Final answer
    x = 462,306.46

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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.