Home / 813,123.80-1,122,109.74-450,571.14

Finding the Fourth Proportional to 813,123.80, 1,122,109.74 and 450,571.14

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Solution

The fourth proportional to 813,123.80, 1,122,109.74 and 450,571.14 is: 621,787.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    813,123.80 : 1,122,109.74 = 450,571.14 : x
  2. Step 2: Convert to fraction form
    813,123.80/1,122,109.74 = 450,571.14/x
  3. Step 3: Cross multiply
    813,123.80x = 1,122,109.74 × 450,571.14
  4. Step 4: Simplify right side
    813,123.80x = 505,590,264,756.90
  5. Step 5: Solve for x
    x = 505,590,264,756.90/813,123.80
  6. Step 6: Final answer
    x = 621,787.56

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1.5x scale

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.