Home / 644,917.40-966,915.30-289,640.60

Finding the Fourth Proportional to 644,917.40, 966,915.30 and 289,640.60

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Solution

The fourth proportional to 644,917.40, 966,915.30 and 289,640.60 is: 434,253.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    644,917.40 : 966,915.30 = 289,640.60 : x
  2. Step 2: Convert to fraction form
    644,917.40/966,915.30 = 289,640.60/x
  3. Step 3: Cross multiply
    644,917.40x = 966,915.30 × 289,640.60
  4. Step 4: Simplify right side
    644,917.40x = 280,057,927,641.18
  5. Step 5: Solve for x
    x = 280,057,927,641.18/644,917.40
  6. Step 6: Final answer
    x = 434,253.95

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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.