Home / 621,631.60-933,138.60-385,241.20

Finding the Fourth Proportional to 621,631.60, 933,138.60 and 385,241.20

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Solution

The fourth proportional to 621,631.60, 933,138.60 and 385,241.20 is: 578,290.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    621,631.60 : 933,138.60 = 385,241.20 : x
  2. Step 2: Convert to fraction form
    621,631.60/933,138.60 = 385,241.20/x
  3. Step 3: Cross multiply
    621,631.60x = 933,138.60 × 385,241.20
  4. Step 4: Simplify right side
    621,631.60x = 359,483,434,030.32
  5. Step 5: Solve for x
    x = 359,483,434,030.32/621,631.60
  6. Step 6: Final answer
    x = 578,290.15

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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.