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Finding the Fourth Proportional to 640,480.32, 883,866.34 and 350,092.28

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Solution

The fourth proportional to 640,480.32, 883,866.34 and 350,092.28 is: 483,129.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    640,480.32 : 883,866.34 = 350,092.28 : x
  2. Step 2: Convert to fraction form
    640,480.32/883,866.34 = 350,092.28/x
  3. Step 3: Cross multiply
    640,480.32x = 883,866.34 × 350,092.28
  4. Step 4: Simplify right side
    640,480.32x = 309,434,781,518.64
  5. Step 5: Solve for x
    x = 309,434,781,518.64/640,480.32
  6. Step 6: Final answer
    x = 483,129.26

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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.