Home / 419,904,408.60-629,856,612.90-386,742,490.20

Finding the Fourth Proportional to 419,904,408.60, 629,856,612.90 and 386,742,490.20

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Solution

The fourth proportional to 419,904,408.60, 629,856,612.90 and 386,742,490.20 is: 580,113,735.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    419,904,408.60 : 629,856,612.90 = 386,742,490.20 : x
  2. Step 2: Convert to fraction form
    419,904,408.60/629,856,612.90 = 386,742,490.20/x
  3. Step 3: Cross multiply
    419,904,408.60x = 629,856,612.90 × 386,742,490.20
  4. Step 4: Simplify right side
    419,904,408.60x = 243,592,314,941,883,424
  5. Step 5: Solve for x
    x = 243,592,314,941,883,424/419,904,408.60
  6. Step 6: Final answer
    x = 580,113,735.30

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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.