Home / 645,643.20-968,637.60-576,004.80

Finding the Fourth Proportional to 645,643.20, 968,637.60 and 576,004.80

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Solution

The fourth proportional to 645,643.20, 968,637.60 and 576,004.80 is: 864,161.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    645,643.20 : 968,637.60 = 576,004.80 : x
  2. Step 2: Convert to fraction form
    645,643.20/968,637.60 = 576,004.80/x
  3. Step 3: Cross multiply
    645,643.20x = 968,637.60 × 576,004.80
  4. Step 4: Simplify right side
    645,643.20x = 557,939,907,060.48
  5. Step 5: Solve for x
    x = 557,939,907,060.48/645,643.20
  6. Step 6: Final answer
    x = 864,161.36

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.