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Finding the Fourth Proportional to 447,779.40, 627,720.60 and 447,779.40

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Solution

The fourth proportional to 447,779.40, 627,720.60 and 447,779.40 is: 627,720.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    447,779.40 : 627,720.60 = 447,779.40 : x
  2. Step 2: Convert to fraction form
    447,779.40/627,720.60 = 447,779.40/x
  3. Step 3: Cross multiply
    447,779.40x = 627,720.60 × 447,779.40
  4. Step 4: Simplify right side
    447,779.40x = 281,080,353,635.64
  5. Step 5: Solve for x
    x = 281,080,353,635.64/447,779.40
  6. Step 6: Final answer
    x = 627,720.60

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Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.