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Finding the Fourth Proportional to 660,613.68, 911,710.88 and 370,274.57

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Solution

The fourth proportional to 660,613.68, 911,710.88 and 370,274.57 is: 511,014.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    660,613.68 : 911,710.88 = 370,274.57 : x
  2. Step 2: Convert to fraction form
    660,613.68/911,710.88 = 370,274.57/x
  3. Step 3: Cross multiply
    660,613.68x = 911,710.88 × 370,274.57
  4. Step 4: Simplify right side
    660,613.68x = 337,583,347,646.39
  5. Step 5: Solve for x
    x = 337,583,347,646.39/660,613.68
  6. Step 6: Final answer
    x = 511,014.77

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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.