Home / 521,526,578.81-719,746,709.37-298,578,189.11

Finding the Fourth Proportional to 521,526,578.81, 719,746,709.37 and 298,578,189.11

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Solution

The fourth proportional to 521,526,578.81, 719,746,709.37 and 298,578,189.11 is: 412,060,818.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    521,526,578.81 : 719,746,709.37 = 298,578,189.11 : x
  2. Step 2: Convert to fraction form
    521,526,578.81/719,746,709.37 = 298,578,189.11/x
  3. Step 3: Cross multiply
    521,526,578.81x = 719,746,709.37 × 298,578,189.11
  4. Step 4: Simplify right side
    521,526,578.81x = 214,900,669,101,576,096
  5. Step 5: Solve for x
    x = 214,900,669,101,576,096/521,526,578.81
  6. Step 6: Final answer
    x = 412,060,818.82

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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.