Home / 1,262,328.20-1,893,501.90-420,878.60

Finding the Fourth Proportional to 1,262,328.20, 1,893,501.90 and 420,878.60

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Solution

The fourth proportional to 1,262,328.20, 1,893,501.90 and 420,878.60 is: 631,321.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,262,328.20 : 1,893,501.90 = 420,878.60 : x
  2. Step 2: Convert to fraction form
    1,262,328.20/1,893,501.90 = 420,878.60/x
  3. Step 3: Cross multiply
    1,262,328.20x = 1,893,501.90 × 420,878.60
  4. Step 4: Simplify right side
    1,262,328.20x = 796,934,428,769.34
  5. Step 5: Solve for x
    x = 796,934,428,769.34/1,262,328.20
  6. Step 6: Final answer
    x = 631,321.10

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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.