Home / 730,144.53-1,008,289.62-690,384.87

Finding the Fourth Proportional to 730,144.53, 1,008,289.62 and 690,384.87

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Solution

The fourth proportional to 730,144.53, 1,008,289.62 and 690,384.87 is: 953,383.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    730,144.53 : 1,008,289.62 = 690,384.87 : x
  2. Step 2: Convert to fraction form
    730,144.53/1,008,289.62 = 690,384.87/x
  3. Step 3: Cross multiply
    730,144.53x = 1,008,289.62 × 690,384.87
  4. Step 4: Simplify right side
    730,144.53x = 696,107,898,226.05
  5. Step 5: Solve for x
    x = 696,107,898,226.05/730,144.53
  6. Step 6: Final answer
    x = 953,383.71

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.