Home / 698,866.30-1,048,299.45-687,202.30

Finding the Fourth Proportional to 698,866.30, 1,048,299.45 and 687,202.30

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Solution

The fourth proportional to 698,866.30, 1,048,299.45 and 687,202.30 is: 1,030,803.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    698,866.30 : 1,048,299.45 = 687,202.30 : x
  2. Step 2: Convert to fraction form
    698,866.30/1,048,299.45 = 687,202.30/x
  3. Step 3: Cross multiply
    698,866.30x = 1,048,299.45 × 687,202.30
  4. Step 4: Simplify right side
    698,866.30x = 720,393,793,128.74
  5. Step 5: Solve for x
    x = 720,393,793,128.74/698,866.30
  6. Step 6: Final answer
    x = 1,030,803.45

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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.