Home / 990,525.56-1,485,715.67-316,425.87

Finding the Fourth Proportional to 990,525.56, 1,485,715.67 and 316,425.87

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Solution

The fourth proportional to 990,525.56, 1,485,715.67 and 316,425.87 is: 474,615.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    990,525.56 : 1,485,715.67 = 316,425.87 : x
  2. Step 2: Convert to fraction form
    990,525.56/1,485,715.67 = 316,425.87/x
  3. Step 3: Cross multiply
    990,525.56x = 1,485,715.67 × 316,425.87
  4. Step 4: Simplify right side
    990,525.56x = 470,118,868,878.28
  5. Step 5: Solve for x
    x = 470,118,868,878.28/990,525.56
  6. Step 6: Final answer
    x = 474,615.59

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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.