Home / 1,220,666.42-1,684,314.90-813,376.55

Finding the Fourth Proportional to 1,220,666.42, 1,684,314.90 and 813,376.55

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Solution

The fourth proportional to 1,220,666.42, 1,684,314.90 and 813,376.55 is: 1,122,323.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,220,666.42 : 1,684,314.90 = 813,376.55 : x
  2. Step 2: Convert to fraction form
    1,220,666.42/1,684,314.90 = 813,376.55/x
  3. Step 3: Cross multiply
    1,220,666.42x = 1,684,314.90 × 813,376.55
  4. Step 4: Simplify right side
    1,220,666.42x = 1,369,982,246,686.38
  5. Step 5: Solve for x
    x = 1,369,982,246,686.38/1,220,666.42
  6. Step 6: Final answer
    x = 1,122,323.20

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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.