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Finding the Fourth Proportional to 660,420.66, 911,403.05 and 370,044.37

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Solution

The fourth proportional to 660,420.66, 911,403.05 and 370,044.37 is: 510,673.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    660,420.66 : 911,403.05 = 370,044.37 : x
  2. Step 2: Convert to fraction form
    660,420.66/911,403.05 = 370,044.37/x
  3. Step 3: Cross multiply
    660,420.66x = 911,403.05 × 370,044.37
  4. Step 4: Simplify right side
    660,420.66x = 337,259,567,453.33
  5. Step 5: Solve for x
    x = 337,259,567,453.33/660,420.66
  6. Step 6: Final answer
    x = 510,673.86

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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.