Home / 990,169.72-1,485,242.73-316,242.02

Finding the Fourth Proportional to 990,169.72, 1,485,242.73 and 316,242.02

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Solution

The fourth proportional to 990,169.72, 1,485,242.73 and 316,242.02 is: 474,359.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    990,169.72 : 1,485,242.73 = 316,242.02 : x
  2. Step 2: Convert to fraction form
    990,169.72/1,485,242.73 = 316,242.02/x
  3. Step 3: Cross multiply
    990,169.72x = 1,485,242.73 × 316,242.02
  4. Step 4: Simplify right side
    990,169.72x = 469,696,164,838.62
  5. Step 5: Solve for x
    x = 469,696,164,838.62/990,169.72
  6. Step 6: Final answer
    x = 474,359.25

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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.