Home / 818,783.40-1,228,175.10-498,606.60

Finding the Fourth Proportional to 818,783.40, 1,228,175.10 and 498,606.60

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Solution

The fourth proportional to 818,783.40, 1,228,175.10 and 498,606.60 is: 747,909.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    818,783.40 : 1,228,175.10 = 498,606.60 : x
  2. Step 2: Convert to fraction form
    818,783.40/1,228,175.10 = 498,606.60/x
  3. Step 3: Cross multiply
    818,783.40x = 1,228,175.10 × 498,606.60
  4. Step 4: Simplify right side
    818,783.40x = 612,376,210,815.66
  5. Step 5: Solve for x
    x = 612,376,210,815.66/818,783.40
  6. Step 6: Final answer
    x = 747,909.90

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Double scale
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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.