Home / 640,701.06-884,089.53-354,181.38

Finding the Fourth Proportional to 640,701.06, 884,089.53 and 354,181.38

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Solution

The fourth proportional to 640,701.06, 884,089.53 and 354,181.38 is: 488,727.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    640,701.06 : 884,089.53 = 354,181.38 : x
  2. Step 2: Convert to fraction form
    640,701.06/884,089.53 = 354,181.38/x
  3. Step 3: Cross multiply
    640,701.06x = 884,089.53 × 354,181.38
  4. Step 4: Simplify right side
    640,701.06x = 313,128,049,778.95
  5. Step 5: Solve for x
    x = 313,128,049,778.95/640,701.06
  6. Step 6: Final answer
    x = 488,727.22

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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.