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Finding the Fourth Proportional to 478,415.63, 660,206.48 and 263,555.84

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Solution

The fourth proportional to 478,415.63, 660,206.48 and 263,555.84 is: 363,703.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,415.63 : 660,206.48 = 263,555.84 : x
  2. Step 2: Convert to fraction form
    478,415.63/660,206.48 = 263,555.84/x
  3. Step 3: Cross multiply
    478,415.63x = 660,206.48 × 263,555.84
  4. Step 4: Simplify right side
    478,415.63x = 174,001,268,791.03
  5. Step 5: Solve for x
    x = 174,001,268,791.03/478,415.63
  6. Step 6: Final answer
    x = 363,703.15

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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.