Home / 718,861.95-1,078,108.32-213,303.36

Finding the Fourth Proportional to 718,861.95, 1,078,108.32 and 213,303.36

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Solution

The fourth proportional to 718,861.95, 1,078,108.32 and 213,303.36 is: 319,900.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    718,861.95 : 1,078,108.32 = 213,303.36 : x
  2. Step 2: Convert to fraction form
    718,861.95/1,078,108.32 = 213,303.36/x
  3. Step 3: Cross multiply
    718,861.95x = 1,078,108.32 × 213,303.36
  4. Step 4: Simplify right side
    718,861.95x = 229,964,127,099.96
  5. Step 5: Solve for x
    x = 229,964,127,099.96/718,861.95
  6. Step 6: Final answer
    x = 319,900.26

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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.