Home / 1,029,384.27-1,420,209.81-621,331.11

Finding the Fourth Proportional to 1,029,384.27, 1,420,209.81 and 621,331.11

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Solution

The fourth proportional to 1,029,384.27, 1,420,209.81 and 621,331.11 is: 857,231.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,029,384.27 : 1,420,209.81 = 621,331.11 : x
  2. Step 2: Convert to fraction form
    1,029,384.27/1,420,209.81 = 621,331.11/x
  3. Step 3: Cross multiply
    1,029,384.27x = 1,420,209.81 × 621,331.11
  4. Step 4: Simplify right side
    1,029,384.27x = 882,420,537,680.19
  5. Step 5: Solve for x
    x = 882,420,537,680.19/1,029,384.27
  6. Step 6: Final answer
    x = 857,231.42

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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.