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Finding the Fourth Proportional to 660,289.92, 911,256.48 and 373,860.48

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Solution

The fourth proportional to 660,289.92, 911,256.48 and 373,860.48 is: 515,959.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    660,289.92 : 911,256.48 = 373,860.48 : x
  2. Step 2: Convert to fraction form
    660,289.92/911,256.48 = 373,860.48/x
  3. Step 3: Cross multiply
    660,289.92x = 911,256.48 × 373,860.48
  4. Step 4: Simplify right side
    660,289.92x = 340,682,785,015.91
  5. Step 5: Solve for x
    x = 340,682,785,015.91/660,289.92
  6. Step 6: Final answer
    x = 515,959.39

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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.