Home / 1,087,405.68-1,631,108.52-339,515.76

Finding the Fourth Proportional to 1,087,405.68, 1,631,108.52 and 339,515.76

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Solution

The fourth proportional to 1,087,405.68, 1,631,108.52 and 339,515.76 is: 509,273.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,087,405.68 : 1,631,108.52 = 339,515.76 : x
  2. Step 2: Convert to fraction form
    1,087,405.68/1,631,108.52 = 339,515.76/x
  3. Step 3: Cross multiply
    1,087,405.68x = 1,631,108.52 × 339,515.76
  4. Step 4: Simplify right side
    1,087,405.68x = 553,787,048,810.28
  5. Step 5: Solve for x
    x = 553,787,048,810.28/1,087,405.68
  6. Step 6: Final answer
    x = 509,273.64

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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.