Home / 990,526.25-1,485,716.72-316,426.53

Finding the Fourth Proportional to 990,526.25, 1,485,716.72 and 316,426.53

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Solution

The fourth proportional to 990,526.25, 1,485,716.72 and 316,426.53 is: 474,616.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    990,526.25 : 1,485,716.72 = 316,426.53 : x
  2. Step 2: Convert to fraction form
    990,526.25/1,485,716.72 = 316,426.53/x
  3. Step 3: Cross multiply
    990,526.25x = 1,485,716.72 × 316,426.53
  4. Step 4: Simplify right side
    990,526.25x = 470,120,190,261.89
  5. Step 5: Solve for x
    x = 470,120,190,261.89/990,526.25
  6. Step 6: Final answer
    x = 474,616.59

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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.