Home / 489,109.60-733,664.40-426,901.60

Finding the Fourth Proportional to 489,109.60, 733,664.40 and 426,901.60

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Solution

The fourth proportional to 489,109.60, 733,664.40 and 426,901.60 is: 640,352.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    489,109.60 : 733,664.40 = 426,901.60 : x
  2. Step 2: Convert to fraction form
    489,109.60/733,664.40 = 426,901.60/x
  3. Step 3: Cross multiply
    489,109.60x = 733,664.40 × 426,901.60
  4. Step 4: Simplify right side
    489,109.60x = 313,202,506,223.04
  5. Step 5: Solve for x
    x = 313,202,506,223.04/489,109.60
  6. Step 6: Final answer
    x = 640,352.40

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Similar ratio
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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.