Home / 664,046.19-916,291.31-377,534.61

Finding the Fourth Proportional to 664,046.19, 916,291.31 and 377,534.61

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Solution

The fourth proportional to 664,046.19, 916,291.31 and 377,534.61 is: 520,945.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    664,046.19 : 916,291.31 = 377,534.61 : x
  2. Step 2: Convert to fraction form
    664,046.19/916,291.31 = 377,534.61/x
  3. Step 3: Cross multiply
    664,046.19x = 916,291.31 × 377,534.61
  4. Step 4: Simplify right side
    664,046.19x = 345,931,680,479.57
  5. Step 5: Solve for x
    x = 345,931,680,479.57/664,046.19
  6. Step 6: Final answer
    x = 520,945.21

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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.