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Finding the Fourth Proportional to 660,471.80, 990,051.60 and 304,865.60

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Solution

The fourth proportional to 660,471.80, 990,051.60 and 304,865.60 is: 456,995.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    660,471.80 : 990,051.60 = 304,865.60 : x
  2. Step 2: Convert to fraction form
    660,471.80/990,051.60 = 304,865.60/x
  3. Step 3: Cross multiply
    660,471.80x = 990,051.60 × 304,865.60
  4. Step 4: Simplify right side
    660,471.80x = 301,832,675,064.96
  5. Step 5: Solve for x
    x = 301,832,675,064.96/660,471.80
  6. Step 6: Final answer
    x = 456,995.55

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.