Home / 1,273,218.89-1,909,423.19-420,131.48

Finding the Fourth Proportional to 1,273,218.89, 1,909,423.19 and 420,131.48

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Solution

The fourth proportional to 1,273,218.89, 1,909,423.19 and 420,131.48 is: 630,063.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,273,218.89 : 1,909,423.19 = 420,131.48 : x
  2. Step 2: Convert to fraction form
    1,273,218.89/1,909,423.19 = 420,131.48/x
  3. Step 3: Cross multiply
    1,273,218.89x = 1,909,423.19 × 420,131.48
  4. Step 4: Simplify right side
    1,273,218.89x = 802,208,782,264.23
  5. Step 5: Solve for x
    x = 802,208,782,264.23/1,273,218.89
  6. Step 6: Final answer
    x = 630,063.53

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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.