Home / 687,702,990.40-1,031,554,485.60-624,213,505.60

Finding the Fourth Proportional to 687,702,990.40, 1,031,554,485.60 and 624,213,505.60

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Solution

The fourth proportional to 687,702,990.40, 1,031,554,485.60 and 624,213,505.60 is: 936,320,258.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    687,702,990.40 : 1,031,554,485.60 = 624,213,505.60 : x
  2. Step 2: Convert to fraction form
    687,702,990.40/1,031,554,485.60 = 624,213,505.60/x
  3. Step 3: Cross multiply
    687,702,990.40x = 1,031,554,485.60 × 624,213,505.60
  4. Step 4: Simplify right side
    687,702,990.40x = 643,910,241,673,780,736
  5. Step 5: Solve for x
    x = 643,910,241,673,780,736/687,702,990.40
  6. Step 6: Final answer
    x = 936,320,258.40

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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.