Home / 690,485.42-1,035,728.21-210,715.74

Finding the Fourth Proportional to 690,485.42, 1,035,728.21 and 210,715.74

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Solution

The fourth proportional to 690,485.42, 1,035,728.21 and 210,715.74 is: 316,073.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    690,485.42 : 1,035,728.21 = 210,715.74 : x
  2. Step 2: Convert to fraction form
    690,485.42/1,035,728.21 = 210,715.74/x
  3. Step 3: Cross multiply
    690,485.42x = 1,035,728.21 × 210,715.74
  4. Step 4: Simplify right side
    690,485.42x = 218,244,236,209.03
  5. Step 5: Solve for x
    x = 218,244,236,209.03/690,485.42
  6. Step 6: Final answer
    x = 316,073.63

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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.