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Finding the Fourth Proportional to 490,868.40, 736,734.60 and 290,938.80

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Solution

The fourth proportional to 490,868.40, 736,734.60 and 290,938.80 is: 436,664.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    490,868.40 : 736,734.60 = 290,938.80 : x
  2. Step 2: Convert to fraction form
    490,868.40/736,734.60 = 290,938.80/x
  3. Step 3: Cross multiply
    490,868.40x = 736,734.60 × 290,938.80
  4. Step 4: Simplify right side
    490,868.40x = 214,344,680,442.48
  5. Step 5: Solve for x
    x = 214,344,680,442.48/490,868.40
  6. Step 6: Final answer
    x = 436,664.25

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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.