Home / 1,220,664.17-1,684,311.80-813,374.30

Finding the Fourth Proportional to 1,220,664.17, 1,684,311.80 and 813,374.30

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Solution

The fourth proportional to 1,220,664.17, 1,684,311.80 and 813,374.30 is: 1,122,320.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,220,664.17 : 1,684,311.80 = 813,374.30 : x
  2. Step 2: Convert to fraction form
    1,220,664.17/1,684,311.80 = 813,374.30/x
  3. Step 3: Cross multiply
    1,220,664.17x = 1,684,311.80 × 813,374.30
  4. Step 4: Simplify right side
    1,220,664.17x = 1,369,975,931,450.65
  5. Step 5: Solve for x
    x = 1,369,975,931,450.65/1,220,664.17
  6. Step 6: Final answer
    x = 1,122,320.10

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.