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Finding the Fourth Proportional to 999,218.94, 1,378,888.02 and 569,637.54

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Solution

The fourth proportional to 999,218.94, 1,378,888.02 and 569,637.54 is: 786,080.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    999,218.94 : 1,378,888.02 = 569,637.54 : x
  2. Step 2: Convert to fraction form
    999,218.94/1,378,888.02 = 569,637.54/x
  3. Step 3: Cross multiply
    999,218.94x = 1,378,888.02 × 569,637.54
  4. Step 4: Simplify right side
    999,218.94x = 785,466,379,648.27
  5. Step 5: Solve for x
    x = 785,466,379,648.27/999,218.94
  6. Step 6: Final answer
    x = 786,080.36

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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.