Home / 861,640.40-1,292,518.20-293,013.20

Finding the Fourth Proportional to 861,640.40, 1,292,518.20 and 293,013.20

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Solution

The fourth proportional to 861,640.40, 1,292,518.20 and 293,013.20 is: 439,539.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    861,640.40 : 1,292,518.20 = 293,013.20 : x
  2. Step 2: Convert to fraction form
    861,640.40/1,292,518.20 = 293,013.20/x
  3. Step 3: Cross multiply
    861,640.40x = 1,292,518.20 × 293,013.20
  4. Step 4: Simplify right side
    861,640.40x = 378,724,893,840.24
  5. Step 5: Solve for x
    x = 378,724,893,840.24/861,640.40
  6. Step 6: Final answer
    x = 439,539.39

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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.