Home / 643,123.20-964,028.70-376,746.60

Finding the Fourth Proportional to 643,123.20, 964,028.70 and 376,746.60

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Solution

The fourth proportional to 643,123.20, 964,028.70 and 376,746.60 is: 564,735.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    643,123.20 : 964,028.70 = 376,746.60 : x
  2. Step 2: Convert to fraction form
    643,123.20/964,028.70 = 376,746.60/x
  3. Step 3: Cross multiply
    643,123.20x = 964,028.70 × 376,746.60
  4. Step 4: Simplify right side
    643,123.20x = 363,194,535,027.42
  5. Step 5: Solve for x
    x = 363,194,535,027.42/643,123.20
  6. Step 6: Final answer
    x = 564,735.55

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.