Home / 1,280,500.20-1,918,223.10-649,866.60

Finding the Fourth Proportional to 1,280,500.20, 1,918,223.10 and 649,866.60

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Solution

The fourth proportional to 1,280,500.20, 1,918,223.10 and 649,866.60 is: 973,517.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,280,500.20 : 1,918,223.10 = 649,866.60 : x
  2. Step 2: Convert to fraction form
    1,280,500.20/1,918,223.10 = 649,866.60/x
  3. Step 3: Cross multiply
    1,280,500.20x = 1,918,223.10 × 649,866.60
  4. Step 4: Simplify right side
    1,280,500.20x = 1,246,589,124,038.46
  5. Step 5: Solve for x
    x = 1,246,589,124,038.46/1,280,500.20
  6. Step 6: Final answer
    x = 973,517.32

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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.