Home / 644,509.27-889,448.03-440,987.05

Finding the Fourth Proportional to 644,509.27, 889,448.03 and 440,987.05

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Solution

The fourth proportional to 644,509.27, 889,448.03 and 440,987.05 is: 608,579.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    644,509.27 : 889,448.03 = 440,987.05 : x
  2. Step 2: Convert to fraction form
    644,509.27/889,448.03 = 440,987.05/x
  3. Step 3: Cross multiply
    644,509.27x = 889,448.03 × 440,987.05
  4. Step 4: Simplify right side
    644,509.27x = 392,235,062,878.01
  5. Step 5: Solve for x
    x = 392,235,062,878.01/644,509.27
  6. Step 6: Final answer
    x = 608,579.40

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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.