Home / 640,413.06-883,740.99-395,507.33

Finding the Fourth Proportional to 640,413.06, 883,740.99 and 395,507.33

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Solution

The fourth proportional to 640,413.06, 883,740.99 and 395,507.33 is: 545,782.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    640,413.06 : 883,740.99 = 395,507.33 : x
  2. Step 2: Convert to fraction form
    640,413.06/883,740.99 = 395,507.33/x
  3. Step 3: Cross multiply
    640,413.06x = 883,740.99 × 395,507.33
  4. Step 4: Simplify right side
    640,413.06x = 349,526,037,388.92
  5. Step 5: Solve for x
    x = 349,526,037,388.92/640,413.06
  6. Step 6: Final answer
    x = 545,782.18

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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.