Home / 821,417.46-1,230,856.21-641,075.31

Finding the Fourth Proportional to 821,417.46, 1,230,856.21 and 641,075.31

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Solution

The fourth proportional to 821,417.46, 1,230,856.21 and 641,075.31 is: 960,621.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    821,417.46 : 1,230,856.21 = 641,075.31 : x
  2. Step 2: Convert to fraction form
    821,417.46/1,230,856.21 = 641,075.31/x
  3. Step 3: Cross multiply
    821,417.46x = 1,230,856.21 × 641,075.31
  4. Step 4: Simplify right side
    821,417.46x = 789,071,523,586.47
  5. Step 5: Solve for x
    x = 789,071,523,586.47/821,417.46
  6. Step 6: Final answer
    x = 960,621.81

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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.