Home / 1,273,285.30-1,909,522.55-420,198.16

Finding the Fourth Proportional to 1,273,285.30, 1,909,522.55 and 420,198.16

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Solution

The fourth proportional to 1,273,285.30, 1,909,522.55 and 420,198.16 is: 630,163.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,273,285.30 : 1,909,522.55 = 420,198.16 : x
  2. Step 2: Convert to fraction form
    1,273,285.30/1,909,522.55 = 420,198.16/x
  3. Step 3: Cross multiply
    1,273,285.30x = 1,909,522.55 × 420,198.16
  4. Step 4: Simplify right side
    1,273,285.30x = 802,377,861,988.51
  5. Step 5: Solve for x
    x = 802,377,861,988.51/1,273,285.30
  6. Step 6: Final answer
    x = 630,163.45

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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.