Home / 1,129,860.50-1,558,828.11-639,763.03

Finding the Fourth Proportional to 1,129,860.50, 1,558,828.11 and 639,763.03

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Solution

The fourth proportional to 1,129,860.50, 1,558,828.11 and 639,763.03 is: 882,658.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,129,860.50 : 1,558,828.11 = 639,763.03 : x
  2. Step 2: Convert to fraction form
    1,129,860.50/1,558,828.11 = 639,763.03/x
  3. Step 3: Cross multiply
    1,129,860.50x = 1,558,828.11 × 639,763.03
  4. Step 4: Simplify right side
    1,129,860.50x = 997,280,587,108.63
  5. Step 5: Solve for x
    x = 997,280,587,108.63/1,129,860.50
  6. Step 6: Final answer
    x = 882,658.16

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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.