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Finding the Fourth Proportional to 819,000.66, 1,228,599.40 and 774,210.90

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Solution

The fourth proportional to 819,000.66, 1,228,599.40 and 774,210.90 is: 1,161,409.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    819,000.66 : 1,228,599.40 = 774,210.90 : x
  2. Step 2: Convert to fraction form
    819,000.66/1,228,599.40 = 774,210.90/x
  3. Step 3: Cross multiply
    819,000.66x = 1,228,599.40 × 774,210.90
  4. Step 4: Simplify right side
    819,000.66x = 951,195,047,213.46
  5. Step 5: Solve for x
    x = 951,195,047,213.46/819,000.66
  6. Step 6: Final answer
    x = 1,161,409.38

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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.