Home / 687,702,999.90-1,031,554,499.85-624,213,515.10

Finding the Fourth Proportional to 687,702,999.90, 1,031,554,499.85 and 624,213,515.10

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Solution

The fourth proportional to 687,702,999.90, 1,031,554,499.85 and 624,213,515.10 is: 936,320,272.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    687,702,999.90 : 1,031,554,499.85 = 624,213,515.10 : x
  2. Step 2: Convert to fraction form
    687,702,999.90/1,031,554,499.85 = 624,213,515.10/x
  3. Step 3: Cross multiply
    687,702,999.90x = 1,031,554,499.85 × 624,213,515.10
  4. Step 4: Simplify right side
    687,702,999.90x = 643,910,260,368,590,976
  5. Step 5: Solve for x
    x = 643,910,260,368,590,976/687,702,999.90
  6. Step 6: Final answer
    x = 936,320,272.65

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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.