Home / 690,638.16-1,035,474.72-306,177.90

Finding the Fourth Proportional to 690,638.16, 1,035,474.72 and 306,177.90

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Solution

The fourth proportional to 690,638.16, 1,035,474.72 and 306,177.90 is: 459,052.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    690,638.16 : 1,035,474.72 = 306,177.90 : x
  2. Step 2: Convert to fraction form
    690,638.16/1,035,474.72 = 306,177.90/x
  3. Step 3: Cross multiply
    690,638.16x = 1,035,474.72 × 306,177.90
  4. Step 4: Simplify right side
    690,638.16x = 317,039,475,272.69
  5. Step 5: Solve for x
    x = 317,039,475,272.69/690,638.16
  6. Step 6: Final answer
    x = 459,052.94

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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.