Home / 692,441.22-1,038,778.47-318,454.50

Finding the Fourth Proportional to 692,441.22, 1,038,778.47 and 318,454.50

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Solution

The fourth proportional to 692,441.22, 1,038,778.47 and 318,454.50 is: 477,735.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    692,441.22 : 1,038,778.47 = 318,454.50 : x
  2. Step 2: Convert to fraction form
    692,441.22/1,038,778.47 = 318,454.50/x
  3. Step 3: Cross multiply
    692,441.22x = 1,038,778.47 × 318,454.50
  4. Step 4: Simplify right side
    692,441.22x = 330,803,678,274.62
  5. Step 5: Solve for x
    x = 330,803,678,274.62/692,441.22
  6. Step 6: Final answer
    x = 477,735.39

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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.