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Finding the Fourth Proportional to 660,577.90, 911,567.04 and 374,100.07

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Solution

The fourth proportional to 660,577.90, 911,567.04 and 374,100.07 is: 516,240.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    660,577.90 : 911,567.04 = 374,100.07 : x
  2. Step 2: Convert to fraction form
    660,577.90/911,567.04 = 374,100.07/x
  3. Step 3: Cross multiply
    660,577.90x = 911,567.04 × 374,100.07
  4. Step 4: Simplify right side
    660,577.90x = 341,017,293,473.69
  5. Step 5: Solve for x
    x = 341,017,293,473.69/660,577.90
  6. Step 6: Final answer
    x = 516,240.85

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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.