Home / 805,000.40-1,207,646.40-404,633.60

Finding the Fourth Proportional to 805,000.40, 1,207,646.40 and 404,633.60

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Solution

The fourth proportional to 805,000.40, 1,207,646.40 and 404,633.60 is: 607,023.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    805,000.40 : 1,207,646.40 = 404,633.60 : x
  2. Step 2: Convert to fraction form
    805,000.40/1,207,646.40 = 404,633.60/x
  3. Step 3: Cross multiply
    805,000.40x = 1,207,646.40 × 404,633.60
  4. Step 4: Simplify right side
    805,000.40x = 488,654,310,359.04
  5. Step 5: Solve for x
    x = 488,654,310,359.04/805,000.40
  6. Step 6: Final answer
    x = 607,023.69

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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.