Home / 1,210,428.90-1,815,882.57-357,515.37

Finding the Fourth Proportional to 1,210,428.90, 1,815,882.57 and 357,515.37

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Solution

The fourth proportional to 1,210,428.90, 1,815,882.57 and 357,515.37 is: 536,343.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,210,428.90 : 1,815,882.57 = 357,515.37 : x
  2. Step 2: Convert to fraction form
    1,210,428.90/1,815,882.57 = 357,515.37/x
  3. Step 3: Cross multiply
    1,210,428.90x = 1,815,882.57 × 357,515.37
  4. Step 4: Simplify right side
    1,210,428.90x = 649,205,928,890.10
  5. Step 5: Solve for x
    x = 649,205,928,890.10/1,210,428.90
  6. Step 6: Final answer
    x = 536,343.71

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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.