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Finding the Fourth Proportional to 490,809.60, 736,214.40 and 478,999.80

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Solution

The fourth proportional to 490,809.60, 736,214.40 and 478,999.80 is: 718,499.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    490,809.60 : 736,214.40 = 478,999.80 : x
  2. Step 2: Convert to fraction form
    490,809.60/736,214.40 = 478,999.80/x
  3. Step 3: Cross multiply
    490,809.60x = 736,214.40 × 478,999.80
  4. Step 4: Simplify right side
    490,809.60x = 352,646,550,357.12
  5. Step 5: Solve for x
    x = 352,646,550,357.12/490,809.60
  6. Step 6: Final answer
    x = 718,499.70

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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.