Home / 435,543,582.88-653,411,035.44-128,811,782.56

Finding the Fourth Proportional to 435,543,582.88, 653,411,035.44 and 128,811,782.56

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Solution

The fourth proportional to 435,543,582.88, 653,411,035.44 and 128,811,782.56 is: 193,245,965.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    435,543,582.88 : 653,411,035.44 = 128,811,782.56 : x
  2. Step 2: Convert to fraction form
    435,543,582.88/653,411,035.44 = 128,811,782.56/x
  3. Step 3: Cross multiply
    435,543,582.88x = 653,411,035.44 × 128,811,782.56
  4. Step 4: Simplify right side
    435,543,582.88x = 84,167,040,219,401,744
  5. Step 5: Solve for x
    x = 84,167,040,219,401,744/435,543,582.88
  6. Step 6: Final answer
    x = 193,245,965.57

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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.