Home / 860,398.82-1,291,166.76-405,120.27

Finding the Fourth Proportional to 860,398.82, 1,291,166.76 and 405,120.27

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Solution

The fourth proportional to 860,398.82, 1,291,166.76 and 405,120.27 is: 607,948.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    860,398.82 : 1,291,166.76 = 405,120.27 : x
  2. Step 2: Convert to fraction form
    860,398.82/1,291,166.76 = 405,120.27/x
  3. Step 3: Cross multiply
    860,398.82x = 1,291,166.76 × 405,120.27
  4. Step 4: Simplify right side
    860,398.82x = 523,077,826,426.23
  5. Step 5: Solve for x
    x = 523,077,826,426.23/860,398.82
  6. Step 6: Final answer
    x = 607,948.10

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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.