Home / 831,425,274.40-1,247,137,911.60-257,054,663.20

Finding the Fourth Proportional to 831,425,274.40, 1,247,137,911.60 and 257,054,663.20

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Solution

The fourth proportional to 831,425,274.40, 1,247,137,911.60 and 257,054,663.20 is: 385,581,994.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    831,425,274.40 : 1,247,137,911.60 = 257,054,663.20 : x
  2. Step 2: Convert to fraction form
    831,425,274.40/1,247,137,911.60 = 257,054,663.20/x
  3. Step 3: Cross multiply
    831,425,274.40x = 1,247,137,911.60 × 257,054,663.20
  4. Step 4: Simplify right side
    831,425,274.40x = 320,582,615,830,289,344
  5. Step 5: Solve for x
    x = 320,582,615,830,289,344/831,425,274.40
  6. Step 6: Final answer
    x = 385,581,994.80

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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.