Home / 419,904,393.60-629,856,590.40-386,742,475.20

Finding the Fourth Proportional to 419,904,393.60, 629,856,590.40 and 386,742,475.20

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Solution

The fourth proportional to 419,904,393.60, 629,856,590.40 and 386,742,475.20 is: 580,113,712.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    419,904,393.60 : 629,856,590.40 = 386,742,475.20 : x
  2. Step 2: Convert to fraction form
    419,904,393.60/629,856,590.40 = 386,742,475.20/x
  3. Step 3: Cross multiply
    419,904,393.60x = 629,856,590.40 × 386,742,475.20
  4. Step 4: Simplify right side
    419,904,393.60x = 243,592,296,792,328,544
  5. Step 5: Solve for x
    x = 243,592,296,792,328,544/419,904,393.60
  6. Step 6: Final answer
    x = 580,113,712.80

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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.