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Finding the Fourth Proportional to 660,119.07, 988,404.63 and 418,927.14

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Solution

The fourth proportional to 660,119.07, 988,404.63 and 418,927.14 is: 627,264.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    660,119.07 : 988,404.63 = 418,927.14 : x
  2. Step 2: Convert to fraction form
    660,119.07/988,404.63 = 418,927.14/x
  3. Step 3: Cross multiply
    660,119.07x = 988,404.63 × 418,927.14
  4. Step 4: Simplify right side
    660,119.07x = 414,069,523,237.68
  5. Step 5: Solve for x
    x = 414,069,523,237.68/660,119.07
  6. Step 6: Final answer
    x = 627,264.90

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.