Home / 1,029,222.05-1,420,401.22-621,423.09

Finding the Fourth Proportional to 1,029,222.05, 1,420,401.22 and 621,423.09

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Solution

The fourth proportional to 1,029,222.05, 1,420,401.22 and 621,423.09 is: 857,609.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,029,222.05 : 1,420,401.22 = 621,423.09 : x
  2. Step 2: Convert to fraction form
    1,029,222.05/1,420,401.22 = 621,423.09/x
  3. Step 3: Cross multiply
    1,029,222.05x = 1,420,401.22 × 621,423.09
  4. Step 4: Simplify right side
    1,029,222.05x = 882,670,113,618.61
  5. Step 5: Solve for x
    x = 882,670,113,618.61/1,029,222.05
  6. Step 6: Final answer
    x = 857,609.02

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.