Home / 805,916.20-1,208,528.70-406,402.60

Finding the Fourth Proportional to 805,916.20, 1,208,528.70 and 406,402.60

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Solution

The fourth proportional to 805,916.20, 1,208,528.70 and 406,402.60 is: 609,429.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    805,916.20 : 1,208,528.70 = 406,402.60 : x
  2. Step 2: Convert to fraction form
    805,916.20/1,208,528.70 = 406,402.60/x
  3. Step 3: Cross multiply
    805,916.20x = 1,208,528.70 × 406,402.60
  4. Step 4: Simplify right side
    805,916.20x = 491,149,205,854.62
  5. Step 5: Solve for x
    x = 491,149,205,854.62/805,916.20
  6. Step 6: Final answer
    x = 609,429.62

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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.