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Finding the Fourth Proportional to 660,543.72, 911,713.50 and 374,232.48

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Solution

The fourth proportional to 660,543.72, 911,713.50 and 374,232.48 is: 516,533.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    660,543.72 : 911,713.50 = 374,232.48 : x
  2. Step 2: Convert to fraction form
    660,543.72/911,713.50 = 374,232.48/x
  3. Step 3: Cross multiply
    660,543.72x = 911,713.50 × 374,232.48
  4. Step 4: Simplify right side
    660,543.72x = 341,192,804,154.48
  5. Step 5: Solve for x
    x = 341,192,804,154.48/660,543.72
  6. Step 6: Final answer
    x = 516,533.26

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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.