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Finding the Fourth Proportional to 660,364.08, 990,561.12 and 374,008.56

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Solution

The fourth proportional to 660,364.08, 990,561.12 and 374,008.56 is: 561,021.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    660,364.08 : 990,561.12 = 374,008.56 : x
  2. Step 2: Convert to fraction form
    660,364.08/990,561.12 = 374,008.56/x
  3. Step 3: Cross multiply
    660,364.08x = 990,561.12 × 374,008.56
  4. Step 4: Simplify right side
    660,364.08x = 370,478,338,083.19
  5. Step 5: Solve for x
    x = 370,478,338,083.19/660,364.08
  6. Step 6: Final answer
    x = 561,021.34

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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.