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Finding the Fourth Proportional to 640,507.14, 883,899.90 and 350,119.86

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Solution

The fourth proportional to 640,507.14, 883,899.90 and 350,119.86 is: 483,165.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    640,507.14 : 883,899.90 = 350,119.86 : x
  2. Step 2: Convert to fraction form
    640,507.14/883,899.90 = 350,119.86/x
  3. Step 3: Cross multiply
    640,507.14x = 883,899.90 × 350,119.86
  4. Step 4: Simplify right side
    640,507.14x = 309,470,909,242.01
  5. Step 5: Solve for x
    x = 309,470,909,242.01/640,507.14
  6. Step 6: Final answer
    x = 483,165.43

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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.