Home / 1,245,542.40-1,868,313.60-747,878.40

Finding the Fourth Proportional to 1,245,542.40, 1,868,313.60 and 747,878.40

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Solution

The fourth proportional to 1,245,542.40, 1,868,313.60 and 747,878.40 is: 1,121,817.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,245,542.40 : 1,868,313.60 = 747,878.40 : x
  2. Step 2: Convert to fraction form
    1,245,542.40/1,868,313.60 = 747,878.40/x
  3. Step 3: Cross multiply
    1,245,542.40x = 1,868,313.60 × 747,878.40
  4. Step 4: Simplify right side
    1,245,542.40x = 1,397,271,385,866.24
  5. Step 5: Solve for x
    x = 1,397,271,385,866.24/1,245,542.40
  6. Step 6: Final answer
    x = 1,121,817.60

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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.