Home / 487,240,214.40-730,860,321.60-378,401,097.60

Finding the Fourth Proportional to 487,240,214.40, 730,860,321.60 and 378,401,097.60

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Solution

The fourth proportional to 487,240,214.40, 730,860,321.60 and 378,401,097.60 is: 567,601,646.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    487,240,214.40 : 730,860,321.60 = 378,401,097.60 : x
  2. Step 2: Convert to fraction form
    487,240,214.40/730,860,321.60 = 378,401,097.60/x
  3. Step 3: Cross multiply
    487,240,214.40x = 730,860,321.60 × 378,401,097.60
  4. Step 4: Simplify right side
    487,240,214.40x = 276,558,347,885,729,024
  5. Step 5: Solve for x
    x = 276,558,347,885,729,024/487,240,214.40
  6. Step 6: Final answer
    x = 567,601,646.40

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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.