Home / 679,394,440.80-1,019,091,661.20-406,624,802.40

Finding the Fourth Proportional to 679,394,440.80, 1,019,091,661.20 and 406,624,802.40

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Solution

The fourth proportional to 679,394,440.80, 1,019,091,661.20 and 406,624,802.40 is: 609,937,203.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    679,394,440.80 : 1,019,091,661.20 = 406,624,802.40 : x
  2. Step 2: Convert to fraction form
    679,394,440.80/1,019,091,661.20 = 406,624,802.40/x
  3. Step 3: Cross multiply
    679,394,440.80x = 1,019,091,661.20 × 406,624,802.40
  4. Step 4: Simplify right side
    679,394,440.80x = 414,387,945,362,937,728
  5. Step 5: Solve for x
    x = 414,387,945,362,937,728/679,394,440.80
  6. Step 6: Final answer
    x = 609,937,203.60

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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.