Home / 690,503,847.63-1,036,410,588.54-427,392,510.81

Finding the Fourth Proportional to 690,503,847.63, 1,036,410,588.54 and 427,392,510.81

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Solution

The fourth proportional to 690,503,847.63, 1,036,410,588.54 and 427,392,510.81 is: 641,494,070.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    690,503,847.63 : 1,036,410,588.54 = 427,392,510.81 : x
  2. Step 2: Convert to fraction form
    690,503,847.63/1,036,410,588.54 = 427,392,510.81/x
  3. Step 3: Cross multiply
    690,503,847.63x = 1,036,410,588.54 × 427,392,510.81
  4. Step 4: Simplify right side
    690,503,847.63x = 442,954,123,666,180,416
  5. Step 5: Solve for x
    x = 442,954,123,666,180,416/690,503,847.63
  6. Step 6: Final answer
    x = 641,494,070.14

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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.