Home / 628,454.83-868,142.40-605,123.26

Finding the Fourth Proportional to 628,454.83, 868,142.40 and 605,123.26

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Solution

The fourth proportional to 628,454.83, 868,142.40 and 605,123.26 is: 835,912.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    628,454.83 : 868,142.40 = 605,123.26 : x
  2. Step 2: Convert to fraction form
    628,454.83/868,142.40 = 605,123.26/x
  3. Step 3: Cross multiply
    628,454.83x = 868,142.40 × 605,123.26
  4. Step 4: Simplify right side
    628,454.83x = 525,333,151,865.90
  5. Step 5: Solve for x
    x = 525,333,151,865.90/628,454.83
  6. Step 6: Final answer
    x = 835,912.35

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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.