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Finding the Fourth Proportional to 478,503.42, 660,364.09 and 263,643.42

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Solution

The fourth proportional to 478,503.42, 660,364.09 and 263,643.42 is: 363,844.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,503.42 : 660,364.09 = 263,643.42 : x
  2. Step 2: Convert to fraction form
    478,503.42/660,364.09 = 263,643.42/x
  3. Step 3: Cross multiply
    478,503.42x = 660,364.09 × 263,643.42
  4. Step 4: Simplify right side
    478,503.42x = 174,100,650,433.04
  5. Step 5: Solve for x
    x = 174,100,650,433.04/478,503.42
  6. Step 6: Final answer
    x = 363,844.11

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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.