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Finding the Fourth Proportional to 478,555.09, 660,435.02 and 263,694.89

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Solution

The fourth proportional to 478,555.09, 660,435.02 and 263,694.89 is: 363,914.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,555.09 : 660,435.02 = 263,694.89 : x
  2. Step 2: Convert to fraction form
    478,555.09/660,435.02 = 263,694.89/x
  3. Step 3: Cross multiply
    478,555.09x = 660,435.02 × 263,694.89
  4. Step 4: Simplify right side
    478,555.09x = 174,153,342,261.37
  5. Step 5: Solve for x
    x = 174,153,342,261.37/478,555.09
  6. Step 6: Final answer
    x = 363,914.93

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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.