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Finding the Fourth Proportional to 660,445.06, 911,428.96 and 370,078.28

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Solution

The fourth proportional to 660,445.06, 911,428.96 and 370,078.28 is: 510,716.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    660,445.06 : 911,428.96 = 370,078.28 : x
  2. Step 2: Convert to fraction form
    660,445.06/911,428.96 = 370,078.28/x
  3. Step 3: Cross multiply
    660,445.06x = 911,428.96 × 370,078.28
  4. Step 4: Simplify right side
    660,445.06x = 337,300,063,212.37
  5. Step 5: Solve for x
    x = 337,300,063,212.37/660,445.06
  6. Step 6: Final answer
    x = 510,716.31

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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.