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Finding the Fourth Proportional to 478,774.62, 660,708.81 and 263,918.30

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Solution

The fourth proportional to 478,774.62, 660,708.81 and 263,918.30 is: 364,207.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,774.62 : 660,708.81 = 263,918.30 : x
  2. Step 2: Convert to fraction form
    478,774.62/660,708.81 = 263,918.30/x
  3. Step 3: Cross multiply
    478,774.62x = 660,708.81 × 263,918.30
  4. Step 4: Simplify right side
    478,774.62x = 174,373,142,626.68
  5. Step 5: Solve for x
    x = 174,373,142,626.68/478,774.62
  6. Step 6: Final answer
    x = 364,207.16

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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.