Home / 691,389,534,587.88-954,128,853,678.06-378,524,699,036.76

Finding the Fourth Proportional to 691,389,534,587.88, 954,128,853,678.06 and 378,524,699,036.76

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Solution

The fourth proportional to 691,389,534,587.88, 954,128,853,678.06 and 378,524,699,036.76 is: 522,370,269,020.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    691,389,534,587.88 : 954,128,853,678.06 = 378,524,699,036.76 : x
  2. Step 2: Convert to fraction form
    691,389,534,587.88/954,128,853,678.06 = 378,524,699,036.76/x
  3. Step 3: Cross multiply
    691,389,534,587.88x = 954,128,853,678.06 × 378,524,699,036.76
  4. Step 4: Simplify right side
    691,389,534,587.88x = 361,161,337,180,776,535,425,024
  5. Step 5: Solve for x
    x = 361,161,337,180,776,535,425,024/691,389,534,587.88
  6. Step 6: Final answer
    x = 522,370,269,020.71

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.