Home / 319,485,890.40-479,228,835.60-285,048,513.60

Finding the Fourth Proportional to 319,485,890.40, 479,228,835.60 and 285,048,513.60

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Solution

The fourth proportional to 319,485,890.40, 479,228,835.60 and 285,048,513.60 is: 427,572,770.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    319,485,890.40 : 479,228,835.60 = 285,048,513.60 : x
  2. Step 2: Convert to fraction form
    319,485,890.40/479,228,835.60 = 285,048,513.60/x
  3. Step 3: Cross multiply
    319,485,890.40x = 479,228,835.60 × 285,048,513.60
  4. Step 4: Simplify right side
    319,485,890.40x = 136,603,467,262,038,784
  5. Step 5: Solve for x
    x = 136,603,467,262,038,784/319,485,890.40
  6. Step 6: Final answer
    x = 427,572,770.40

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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.