Home / 687,801.20-1,031,701.80-683,864.60

Finding the Fourth Proportional to 687,801.20, 1,031,701.80 and 683,864.60

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Solution

The fourth proportional to 687,801.20, 1,031,701.80 and 683,864.60 is: 1,025,796.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    687,801.20 : 1,031,701.80 = 683,864.60 : x
  2. Step 2: Convert to fraction form
    687,801.20/1,031,701.80 = 683,864.60/x
  3. Step 3: Cross multiply
    687,801.20x = 1,031,701.80 × 683,864.60
  4. Step 4: Simplify right side
    687,801.20x = 705,544,338,776.28
  5. Step 5: Solve for x
    x = 705,544,338,776.28/687,801.20
  6. Step 6: Final answer
    x = 1,025,796.90

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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.