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Finding the Fourth Proportional to 478,498.68, 660,336.72 and 263,637.36

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Solution

The fourth proportional to 478,498.68, 660,336.72 and 263,637.36 is: 363,824.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,498.68 : 660,336.72 = 263,637.36 : x
  2. Step 2: Convert to fraction form
    478,498.68/660,336.72 = 263,637.36/x
  3. Step 3: Cross multiply
    478,498.68x = 660,336.72 × 263,637.36
  4. Step 4: Simplify right side
    478,498.68x = 174,089,429,571.86
  5. Step 5: Solve for x
    x = 174,089,429,571.86/478,498.68
  6. Step 6: Final answer
    x = 363,824.26

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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.