Home / 621,630.21-933,317.69-318,241.07

Finding the Fourth Proportional to 621,630.21, 933,317.69 and 318,241.07

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Solution

The fourth proportional to 621,630.21, 933,317.69 and 318,241.07 is: 477,808.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    621,630.21 : 933,317.69 = 318,241.07 : x
  2. Step 2: Convert to fraction form
    621,630.21/933,317.69 = 318,241.07/x
  3. Step 3: Cross multiply
    621,630.21x = 933,317.69 × 318,241.07
  4. Step 4: Simplify right side
    621,630.21x = 297,020,014,057.74
  5. Step 5: Solve for x
    x = 297,020,014,057.74/621,630.21
  6. Step 6: Final answer
    x = 477,808.20

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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.