Home / 1,187,212.02-1,638,346.19-643,333.83

Finding the Fourth Proportional to 1,187,212.02, 1,638,346.19 and 643,333.83

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Solution

The fourth proportional to 1,187,212.02, 1,638,346.19 and 643,333.83 is: 887,797.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,187,212.02 : 1,638,346.19 = 643,333.83 : x
  2. Step 2: Convert to fraction form
    1,187,212.02/1,638,346.19 = 643,333.83/x
  3. Step 3: Cross multiply
    1,187,212.02x = 1,638,346.19 × 643,333.83
  4. Step 4: Simplify right side
    1,187,212.02x = 1,054,003,526,061.94
  5. Step 5: Solve for x
    x = 1,054,003,526,061.94/1,187,212.02
  6. Step 6: Final answer
    x = 887,797.22

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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.