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Finding the Fourth Proportional to 490,815.60, 736,223.40 and 434,828.40

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Solution

The fourth proportional to 490,815.60, 736,223.40 and 434,828.40 is: 652,242.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    490,815.60 : 736,223.40 = 434,828.40 : x
  2. Step 2: Convert to fraction form
    490,815.60/736,223.40 = 434,828.40/x
  3. Step 3: Cross multiply
    490,815.60x = 736,223.40 × 434,828.40
  4. Step 4: Simplify right side
    490,815.60x = 320,130,843,064.56
  5. Step 5: Solve for x
    x = 320,130,843,064.56/490,815.60
  6. Step 6: Final answer
    x = 652,242.60

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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.