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Finding the Fourth Proportional to 636,155.87, 877,895.73 and 349,669.80

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Solution

The fourth proportional to 636,155.87, 877,895.73 and 349,669.80 is: 482,544.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    636,155.87 : 877,895.73 = 349,669.80 : x
  2. Step 2: Convert to fraction form
    636,155.87/877,895.73 = 349,669.80/x
  3. Step 3: Cross multiply
    636,155.87x = 877,895.73 × 349,669.80
  4. Step 4: Simplify right side
    636,155.87x = 306,973,624,329.95
  5. Step 5: Solve for x
    x = 306,973,624,329.95/636,155.87
  6. Step 6: Final answer
    x = 482,544.67

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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.