Home / 856,871.80-1,285,307.70-720,014.20

Finding the Fourth Proportional to 856,871.80, 1,285,307.70 and 720,014.20

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Solution

The fourth proportional to 856,871.80, 1,285,307.70 and 720,014.20 is: 1,080,021.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    856,871.80 : 1,285,307.70 = 720,014.20 : x
  2. Step 2: Convert to fraction form
    856,871.80/1,285,307.70 = 720,014.20/x
  3. Step 3: Cross multiply
    856,871.80x = 1,285,307.70 × 720,014.20
  4. Step 4: Simplify right side
    856,871.80x = 925,439,795,369.34
  5. Step 5: Solve for x
    x = 925,439,795,369.34/856,871.80
  6. Step 6: Final answer
    x = 1,080,021.30

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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.