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Finding the Fourth Proportional to 651,603.80, 977,405.70 and 627,984.20

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Solution

The fourth proportional to 651,603.80, 977,405.70 and 627,984.20 is: 941,976.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    651,603.80 : 977,405.70 = 627,984.20 : x
  2. Step 2: Convert to fraction form
    651,603.80/977,405.70 = 627,984.20/x
  3. Step 3: Cross multiply
    651,603.80x = 977,405.70 × 627,984.20
  4. Step 4: Simplify right side
    651,603.80x = 613,795,336,589.94
  5. Step 5: Solve for x
    x = 613,795,336,589.94/651,603.80
  6. Step 6: Final answer
    x = 941,976.30

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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.