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Finding the Fourth Proportional to 660,578.90, 911,568.42 and 374,101.08

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Solution

The fourth proportional to 660,578.90, 911,568.42 and 374,101.08 is: 516,242.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    660,578.90 : 911,568.42 = 374,101.08 : x
  2. Step 2: Convert to fraction form
    660,578.90/911,568.42 = 374,101.08/x
  3. Step 3: Cross multiply
    660,578.90x = 911,568.42 × 374,101.08
  4. Step 4: Simplify right side
    660,578.90x = 341,018,730,415.89
  5. Step 5: Solve for x
    x = 341,018,730,415.89/660,578.90
  6. Step 6: Final answer
    x = 516,242.24

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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.