Home / 644,299.32-889,153.40-386,091.16

Finding the Fourth Proportional to 644,299.32, 889,153.40 and 386,091.16

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Solution

The fourth proportional to 644,299.32, 889,153.40 and 386,091.16 is: 532,817.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    644,299.32 : 889,153.40 = 386,091.16 : x
  2. Step 2: Convert to fraction form
    644,299.32/889,153.40 = 386,091.16/x
  3. Step 3: Cross multiply
    644,299.32x = 889,153.40 × 386,091.16
  4. Step 4: Simplify right side
    644,299.32x = 343,294,267,623.94
  5. Step 5: Solve for x
    x = 343,294,267,623.94/644,299.32
  6. Step 6: Final answer
    x = 532,817.99

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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.