Home / 818,783.40-1,228,175.10-688,875.60

Finding the Fourth Proportional to 818,783.40, 1,228,175.10 and 688,875.60

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Solution

The fourth proportional to 818,783.40, 1,228,175.10 and 688,875.60 is: 1,033,313.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    818,783.40 : 1,228,175.10 = 688,875.60 : x
  2. Step 2: Convert to fraction form
    818,783.40/1,228,175.10 = 688,875.60/x
  3. Step 3: Cross multiply
    818,783.40x = 1,228,175.10 × 688,875.60
  4. Step 4: Simplify right side
    818,783.40x = 846,059,858,917.56
  5. Step 5: Solve for x
    x = 846,059,858,917.56/818,783.40
  6. Step 6: Final answer
    x = 1,033,313.40

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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.