Home / 640,027.90-883,221.39-353,541.82

Finding the Fourth Proportional to 640,027.90, 883,221.39 and 353,541.82

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Solution

The fourth proportional to 640,027.90, 883,221.39 and 353,541.82 is: 487,878.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    640,027.90 : 883,221.39 = 353,541.82 : x
  2. Step 2: Convert to fraction form
    640,027.90/883,221.39 = 353,541.82/x
  3. Step 3: Cross multiply
    640,027.90x = 883,221.39 × 353,541.82
  4. Step 4: Simplify right side
    640,027.90x = 312,255,697,683.53
  5. Step 5: Solve for x
    x = 312,255,697,683.53/640,027.90
  6. Step 6: Final answer
    x = 487,878.26

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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.