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Finding the Fourth Proportional to 660,613.56, 911,710.70 and 370,274.44

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Solution

The fourth proportional to 660,613.56, 911,710.70 and 370,274.44 is: 511,014.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    660,613.56 : 911,710.70 = 370,274.44 : x
  2. Step 2: Convert to fraction form
    660,613.56/911,710.70 = 370,274.44/x
  3. Step 3: Cross multiply
    660,613.56x = 911,710.70 × 370,274.44
  4. Step 4: Simplify right side
    660,613.56x = 337,583,168,884.51
  5. Step 5: Solve for x
    x = 337,583,168,884.51/660,613.56
  6. Step 6: Final answer
    x = 511,014.59

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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.