Home / 328,128,657.60-492,192,986.40-274,779,076.80

Finding the Fourth Proportional to 328,128,657.60, 492,192,986.40 and 274,779,076.80

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Solution

The fourth proportional to 328,128,657.60, 492,192,986.40 and 274,779,076.80 is: 412,168,615.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    328,128,657.60 : 492,192,986.40 = 274,779,076.80 : x
  2. Step 2: Convert to fraction form
    328,128,657.60/492,192,986.40 = 274,779,076.80/x
  3. Step 3: Cross multiply
    328,128,657.60x = 492,192,986.40 × 274,779,076.80
  4. Step 4: Simplify right side
    328,128,657.60x = 135,244,334,410,426,960
  5. Step 5: Solve for x
    x = 135,244,334,410,426,960/328,128,657.60
  6. Step 6: Final answer
    x = 412,168,615.20

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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.