Home / 853,705.40-1,280,558.10-814,339.40

Finding the Fourth Proportional to 853,705.40, 1,280,558.10 and 814,339.40

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Solution

The fourth proportional to 853,705.40, 1,280,558.10 and 814,339.40 is: 1,221,509.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    853,705.40 : 1,280,558.10 = 814,339.40 : x
  2. Step 2: Convert to fraction form
    853,705.40/1,280,558.10 = 814,339.40/x
  3. Step 3: Cross multiply
    853,705.40x = 1,280,558.10 × 814,339.40
  4. Step 4: Simplify right side
    853,705.40x = 1,042,808,914,819.14
  5. Step 5: Solve for x
    x = 1,042,808,914,819.14/853,705.40
  6. Step 6: Final answer
    x = 1,221,509.10

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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.