Home / 390,117,564.68-538,440,450.98-231,435,765.78

Finding the Fourth Proportional to 390,117,564.68, 538,440,450.98 and 231,435,765.78

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Solution

The fourth proportional to 390,117,564.68, 538,440,450.98 and 231,435,765.78 is: 319,427,755.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    390,117,564.68 : 538,440,450.98 = 231,435,765.78 : x
  2. Step 2: Convert to fraction form
    390,117,564.68/538,440,450.98 = 231,435,765.78/x
  3. Step 3: Cross multiply
    390,117,564.68x = 538,440,450.98 × 231,435,765.78
  4. Step 4: Simplify right side
    390,117,564.68x = 124,614,378,096,308,528
  5. Step 5: Solve for x
    x = 124,614,378,096,308,528/390,117,564.68
  6. Step 6: Final answer
    x = 319,427,755.57

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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.