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Finding the Fourth Proportional to 945,561.60, 1,416,009.60 and 628,300.80

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Solution

The fourth proportional to 945,561.60, 1,416,009.60 and 628,300.80 is: 940,901.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    945,561.60 : 1,416,009.60 = 628,300.80 : x
  2. Step 2: Convert to fraction form
    945,561.60/1,416,009.60 = 628,300.80/x
  3. Step 3: Cross multiply
    945,561.60x = 1,416,009.60 × 628,300.80
  4. Step 4: Simplify right side
    945,561.60x = 889,679,964,487.68
  5. Step 5: Solve for x
    x = 889,679,964,487.68/945,561.60
  6. Step 6: Final answer
    x = 940,901.12

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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.