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Finding the Fourth Proportional to 640,546.24, 883,954 and 350,159.08

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Solution

The fourth proportional to 640,546.24, 883,954 and 350,159.08 is: 483,219.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    640,546.24 : 883,954 = 350,159.08 : x
  2. Step 2: Convert to fraction form
    640,546.24/883,954 = 350,159.08/x
  3. Step 3: Cross multiply
    640,546.24x = 883,954 × 350,159.08
  4. Step 4: Simplify right side
    640,546.24x = 309,524,519,402.32
  5. Step 5: Solve for x
    x = 309,524,519,402.32/640,546.24
  6. Step 6: Final answer
    x = 483,219.63

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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.