Home / 489,823.40-733,827.90-278,834.60

Finding the Fourth Proportional to 489,823.40, 733,827.90 and 278,834.60

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Solution

The fourth proportional to 489,823.40, 733,827.90 and 278,834.60 is: 417,735.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    489,823.40 : 733,827.90 = 278,834.60 : x
  2. Step 2: Convert to fraction form
    489,823.40/733,827.90 = 278,834.60/x
  3. Step 3: Cross multiply
    489,823.40x = 733,827.90 × 278,834.60
  4. Step 4: Simplify right side
    489,823.40x = 204,616,608,965.34
  5. Step 5: Solve for x
    x = 204,616,608,965.34/489,823.40
  6. Step 6: Final answer
    x = 417,735.47

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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.