Home / 818,000.20-1,227,000.30-518,818.60

Finding the Fourth Proportional to 818,000.20, 1,227,000.30 and 518,818.60

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Solution

The fourth proportional to 818,000.20, 1,227,000.30 and 518,818.60 is: 778,227.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    818,000.20 : 1,227,000.30 = 518,818.60 : x
  2. Step 2: Convert to fraction form
    818,000.20/1,227,000.30 = 518,818.60/x
  3. Step 3: Cross multiply
    818,000.20x = 1,227,000.30 × 518,818.60
  4. Step 4: Simplify right side
    818,000.20x = 636,590,577,845.58
  5. Step 5: Solve for x
    x = 636,590,577,845.58/818,000.20
  6. Step 6: Final answer
    x = 778,227.90

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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.