Home / 987,967.40-1,362,893.40-624,779.60

Finding the Fourth Proportional to 987,967.40, 1,362,893.40 and 624,779.60

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Solution

The fourth proportional to 987,967.40, 1,362,893.40 and 624,779.60 is: 861,878.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    987,967.40 : 1,362,893.40 = 624,779.60 : x
  2. Step 2: Convert to fraction form
    987,967.40/1,362,893.40 = 624,779.60/x
  3. Step 3: Cross multiply
    987,967.40x = 1,362,893.40 × 624,779.60
  4. Step 4: Simplify right side
    987,967.40x = 851,507,993,294.64
  5. Step 5: Solve for x
    x = 851,507,993,294.64/987,967.40
  6. Step 6: Final answer
    x = 861,878.63

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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.