Home / 640,110.90-883,346.40-353,612.28

Finding the Fourth Proportional to 640,110.90, 883,346.40 and 353,612.28

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Solution

The fourth proportional to 640,110.90, 883,346.40 and 353,612.28 is: 487,981.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    640,110.90 : 883,346.40 = 353,612.28 : x
  2. Step 2: Convert to fraction form
    640,110.90/883,346.40 = 353,612.28/x
  3. Step 3: Cross multiply
    640,110.90x = 883,346.40 × 353,612.28
  4. Step 4: Simplify right side
    640,110.90x = 312,362,134,533.79
  5. Step 5: Solve for x
    x = 312,362,134,533.79/640,110.90
  6. Step 6: Final answer
    x = 487,981.28

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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.