Home / 990,054.38-1,485,069-316,127.12

Finding the Fourth Proportional to 990,054.38, 1,485,069 and 316,127.12

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Solution

The fourth proportional to 990,054.38, 1,485,069 and 316,127.12 is: 474,186.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    990,054.38 : 1,485,069 = 316,127.12 : x
  2. Step 2: Convert to fraction form
    990,054.38/1,485,069 = 316,127.12/x
  3. Step 3: Cross multiply
    990,054.38x = 1,485,069 × 316,127.12
  4. Step 4: Simplify right side
    990,054.38x = 469,470,585,971.28
  5. Step 5: Solve for x
    x = 469,470,585,971.28/990,054.38
  6. Step 6: Final answer
    x = 474,186.67

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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.