Home / 970,059,954.40-1,455,089,931.60-279,989,720.80

Finding the Fourth Proportional to 970,059,954.40, 1,455,089,931.60 and 279,989,720.80

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Solution

The fourth proportional to 970,059,954.40, 1,455,089,931.60 and 279,989,720.80 is: 419,984,581.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    970,059,954.40 : 1,455,089,931.60 = 279,989,720.80 : x
  2. Step 2: Convert to fraction form
    970,059,954.40/1,455,089,931.60 = 279,989,720.80/x
  3. Step 3: Cross multiply
    970,059,954.40x = 1,455,089,931.60 × 279,989,720.80
  4. Step 4: Simplify right side
    970,059,954.40x = 407,410,223,687,575,104
  5. Step 5: Solve for x
    x = 407,410,223,687,575,104/970,059,954.40
  6. Step 6: Final answer
    x = 419,984,581.20

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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.