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Finding the Fourth Proportional to 1,220,826.65, 1,831,621.10 and 735,041.30

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Solution

The fourth proportional to 1,220,826.65, 1,831,621.10 and 735,041.30 is: 1,102,791.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,220,826.65 : 1,831,621.10 = 735,041.30 : x
  2. Step 2: Convert to fraction form
    1,220,826.65/1,831,621.10 = 735,041.30/x
  3. Step 3: Cross multiply
    1,220,826.65x = 1,831,621.10 × 735,041.30
  4. Step 4: Simplify right side
    1,220,826.65x = 1,346,317,154,451.43
  5. Step 5: Solve for x
    x = 1,346,317,154,451.43/1,220,826.65
  6. Step 6: Final answer
    x = 1,102,791.42

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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.