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Finding the Fourth Proportional to 660,757.14, 911,815.65 and 374,271.48

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Solution

The fourth proportional to 660,757.14, 911,815.65 and 374,271.48 is: 516,478.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    660,757.14 : 911,815.65 = 374,271.48 : x
  2. Step 2: Convert to fraction form
    660,757.14/911,815.65 = 374,271.48/x
  3. Step 3: Cross multiply
    660,757.14x = 911,815.65 × 374,271.48
  4. Step 4: Simplify right side
    660,757.14x = 341,266,592,812.66
  5. Step 5: Solve for x
    x = 341,266,592,812.66/660,757.14
  6. Step 6: Final answer
    x = 516,478.10

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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.