Home / 686,990.40-1,030,875.36-266,295.36

Finding the Fourth Proportional to 686,990.40, 1,030,875.36 and 266,295.36

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Solution

The fourth proportional to 686,990.40, 1,030,875.36 and 266,295.36 is: 399,594.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    686,990.40 : 1,030,875.36 = 266,295.36 : x
  2. Step 2: Convert to fraction form
    686,990.40/1,030,875.36 = 266,295.36/x
  3. Step 3: Cross multiply
    686,990.40x = 1,030,875.36 × 266,295.36
  4. Step 4: Simplify right side
    686,990.40x = 274,517,325,106.33
  5. Step 5: Solve for x
    x = 274,517,325,106.33/686,990.40
  6. Step 6: Final answer
    x = 399,594.12

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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.