Home / 687,702,963.40-1,031,554,445.10-624,213,478.60

Finding the Fourth Proportional to 687,702,963.40, 1,031,554,445.10 and 624,213,478.60

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Solution

The fourth proportional to 687,702,963.40, 1,031,554,445.10 and 624,213,478.60 is: 936,320,217.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    687,702,963.40 : 1,031,554,445.10 = 624,213,478.60 : x
  2. Step 2: Convert to fraction form
    687,702,963.40/1,031,554,445.10 = 624,213,478.60/x
  3. Step 3: Cross multiply
    687,702,963.40x = 1,031,554,445.10 × 624,213,478.60
  4. Step 4: Simplify right side
    687,702,963.40x = 643,910,188,541,163,776
  5. Step 5: Solve for x
    x = 643,910,188,541,163,776/687,702,963.40
  6. Step 6: Final answer
    x = 936,320,217.90

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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.