Home / 1,185,529.80-1,636,031.00-641,665.49

Finding the Fourth Proportional to 1,185,529.80, 1,636,031.00 and 641,665.49

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Solution

The fourth proportional to 1,185,529.80, 1,636,031.00 and 641,665.49 is: 885,498.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,185,529.80 : 1,636,031.00 = 641,665.49 : x
  2. Step 2: Convert to fraction form
    1,185,529.80/1,636,031.00 = 641,665.49/x
  3. Step 3: Cross multiply
    1,185,529.80x = 1,636,031.00 × 641,665.49
  4. Step 4: Simplify right side
    1,185,529.80x = 1,049,784,638,964.43
  5. Step 5: Solve for x
    x = 1,049,784,638,964.43/1,185,529.80
  6. Step 6: Final answer
    x = 885,498.31

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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.