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Finding the Fourth Proportional to 890,659.60, 1,336,824.60 and 470,237.20

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Solution

The fourth proportional to 890,659.60, 1,336,824.60 and 470,237.20 is: 705,796.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    890,659.60 : 1,336,824.60 = 470,237.20 : x
  2. Step 2: Convert to fraction form
    890,659.60/1,336,824.60 = 470,237.20/x
  3. Step 3: Cross multiply
    890,659.60x = 1,336,824.60 × 470,237.20
  4. Step 4: Simplify right side
    890,659.60x = 628,624,656,795.12
  5. Step 5: Solve for x
    x = 628,624,656,795.12/890,659.60
  6. Step 6: Final answer
    x = 705,796.76

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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.