Home / 1,220,890-1,831,597.44-411,354.88

Finding the Fourth Proportional to 1,220,890, 1,831,597.44 and 411,354.88

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Solution

The fourth proportional to 1,220,890, 1,831,597.44 and 411,354.88 is: 617,120.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,220,890 : 1,831,597.44 = 411,354.88 : x
  2. Step 2: Convert to fraction form
    1,220,890/1,831,597.44 = 411,354.88/x
  3. Step 3: Cross multiply
    1,220,890x = 1,831,597.44 × 411,354.88
  4. Step 4: Simplify right side
    1,220,890x = 753,436,545,139.51
  5. Step 5: Solve for x
    x = 753,436,545,139.51/1,220,890
  6. Step 6: Final answer
    x = 617,120.74

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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.