Home / 644,533.20-889,436.52-354,144.24

Finding the Fourth Proportional to 644,533.20, 889,436.52 and 354,144.24

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Solution

The fourth proportional to 644,533.20, 889,436.52 and 354,144.24 is: 488,708.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    644,533.20 : 889,436.52 = 354,144.24 : x
  2. Step 2: Convert to fraction form
    644,533.20/889,436.52 = 354,144.24/x
  3. Step 3: Cross multiply
    644,533.20x = 889,436.52 × 354,144.24
  4. Step 4: Simplify right side
    644,533.20x = 314,988,820,403.65
  5. Step 5: Solve for x
    x = 314,988,820,403.65/644,533.20
  6. Step 6: Final answer
    x = 488,708.45

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1.5x scale

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.