Home / 440,097,319.20-660,145,978.80-394,180,816.80

Finding the Fourth Proportional to 440,097,319.20, 660,145,978.80 and 394,180,816.80

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Solution

The fourth proportional to 440,097,319.20, 660,145,978.80 and 394,180,816.80 is: 591,271,225.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    440,097,319.20 : 660,145,978.80 = 394,180,816.80 : x
  2. Step 2: Convert to fraction form
    440,097,319.20/660,145,978.80 = 394,180,816.80/x
  3. Step 3: Cross multiply
    440,097,319.20x = 660,145,978.80 × 394,180,816.80
  4. Step 4: Simplify right side
    440,097,319.20x = 260,216,881,130,619,488
  5. Step 5: Solve for x
    x = 260,216,881,130,619,488/440,097,319.20
  6. Step 6: Final answer
    x = 591,271,225.20

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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.