Home / 431,664,279.60-647,496,419.40-386,314,647.60

Finding the Fourth Proportional to 431,664,279.60, 647,496,419.40 and 386,314,647.60

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Solution

The fourth proportional to 431,664,279.60, 647,496,419.40 and 386,314,647.60 is: 579,471,971.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    431,664,279.60 : 647,496,419.40 = 386,314,647.60 : x
  2. Step 2: Convert to fraction form
    431,664,279.60/647,496,419.40 = 386,314,647.60/x
  3. Step 3: Cross multiply
    431,664,279.60x = 647,496,419.40 × 386,314,647.60
  4. Step 4: Simplify right side
    431,664,279.60x = 250,137,351,082,772,800
  5. Step 5: Solve for x
    x = 250,137,351,082,772,800/431,664,279.60
  6. Step 6: Final answer
    x = 579,471,971.40

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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.