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Finding the Fourth Proportional to 640,512.82, 883,907.54 and 350,125.54

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Solution

The fourth proportional to 640,512.82, 883,907.54 and 350,125.54 is: 483,173.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    640,512.82 : 883,907.54 = 350,125.54 : x
  2. Step 2: Convert to fraction form
    640,512.82/883,907.54 = 350,125.54/x
  3. Step 3: Cross multiply
    640,512.82x = 883,907.54 × 350,125.54
  4. Step 4: Simplify right side
    640,512.82x = 309,478,602,105.15
  5. Step 5: Solve for x
    x = 309,478,602,105.15/640,512.82
  6. Step 6: Final answer
    x = 483,173.16

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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.