Home / 664,081.45-916,428.12-377,601.51

Finding the Fourth Proportional to 664,081.45, 916,428.12 and 377,601.51

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Solution

The fourth proportional to 664,081.45, 916,428.12 and 377,601.51 is: 521,087.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    664,081.45 : 916,428.12 = 377,601.51 : x
  2. Step 2: Convert to fraction form
    664,081.45/916,428.12 = 377,601.51/x
  3. Step 3: Cross multiply
    664,081.45x = 916,428.12 × 377,601.51
  4. Step 4: Simplify right side
    664,081.45x = 346,044,641,918.46
  5. Step 5: Solve for x
    x = 346,044,641,918.46/664,081.45
  6. Step 6: Final answer
    x = 521,087.65

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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.