Home / 1,259,461.20-1,889,191.80-811,563.60

Finding the Fourth Proportional to 1,259,461.20, 1,889,191.80 and 811,563.60

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Solution

The fourth proportional to 1,259,461.20, 1,889,191.80 and 811,563.60 is: 1,217,345.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,259,461.20 : 1,889,191.80 = 811,563.60 : x
  2. Step 2: Convert to fraction form
    1,259,461.20/1,889,191.80 = 811,563.60/x
  3. Step 3: Cross multiply
    1,259,461.20x = 1,889,191.80 × 811,563.60
  4. Step 4: Simplify right side
    1,259,461.20x = 1,533,199,298,298.48
  5. Step 5: Solve for x
    x = 1,533,199,298,298.48/1,259,461.20
  6. Step 6: Final answer
    x = 1,217,345.40

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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.