Home / 641,931.40-885,914.82-355,477.96

Finding the Fourth Proportional to 641,931.40, 885,914.82 and 355,477.96

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Solution

The fourth proportional to 641,931.40, 885,914.82 and 355,477.96 is: 490,586.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    641,931.40 : 885,914.82 = 355,477.96 : x
  2. Step 2: Convert to fraction form
    641,931.40/885,914.82 = 355,477.96/x
  3. Step 3: Cross multiply
    641,931.40x = 885,914.82 × 355,477.96
  4. Step 4: Simplify right side
    641,931.40x = 314,923,192,947.37
  5. Step 5: Solve for x
    x = 314,923,192,947.37/641,931.40
  6. Step 6: Final answer
    x = 490,586.99

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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.