Home / 867,099.11-1,298,965.41-638,980.65

Finding the Fourth Proportional to 867,099.11, 1,298,965.41 and 638,980.65

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Solution

The fourth proportional to 867,099.11, 1,298,965.41 and 638,980.65 is: 957,230.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    867,099.11 : 1,298,965.41 = 638,980.65 : x
  2. Step 2: Convert to fraction form
    867,099.11/1,298,965.41 = 638,980.65/x
  3. Step 3: Cross multiply
    867,099.11x = 1,298,965.41 × 638,980.65
  4. Step 4: Simplify right side
    867,099.11x = 830,013,762,009.32
  5. Step 5: Solve for x
    x = 830,013,762,009.32/867,099.11
  6. Step 6: Final answer
    x = 957,230.56

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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.