Home / 831,123,477.60-1,245,862,904.40-393,655,243.20

Finding the Fourth Proportional to 831,123,477.60, 1,245,862,904.40 and 393,655,243.20

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Solution

The fourth proportional to 831,123,477.60, 1,245,862,904.40 and 393,655,243.20 is: 590,093,383.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    831,123,477.60 : 1,245,862,904.40 = 393,655,243.20 : x
  2. Step 2: Convert to fraction form
    831,123,477.60/1,245,862,904.40 = 393,655,243.20/x
  3. Step 3: Cross multiply
    831,123,477.60x = 1,245,862,904.40 × 393,655,243.20
  4. Step 4: Simplify right side
    831,123,477.60x = 490,440,464,625,440,384
  5. Step 5: Solve for x
    x = 490,440,464,625,440,384/831,123,477.60
  6. Step 6: Final answer
    x = 590,093,383.05

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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.