Home / 813,123.54-1,122,109.40-450,570.89

Finding the Fourth Proportional to 813,123.54, 1,122,109.40 and 450,570.89

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Solution

The fourth proportional to 813,123.54, 1,122,109.40 and 450,570.89 is: 621,787.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    813,123.54 : 1,122,109.40 = 450,570.89 : x
  2. Step 2: Convert to fraction form
    813,123.54/1,122,109.40 = 450,570.89/x
  3. Step 3: Cross multiply
    813,123.54x = 1,122,109.40 × 450,570.89
  4. Step 4: Simplify right side
    813,123.54x = 505,589,823,171.97
  5. Step 5: Solve for x
    x = 505,589,823,171.97/813,123.54
  6. Step 6: Final answer
    x = 621,787.22

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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.