Home / 687,156.16-1,030,831.44-266,474.56

Finding the Fourth Proportional to 687,156.16, 1,030,831.44 and 266,474.56

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Solution

The fourth proportional to 687,156.16, 1,030,831.44 and 266,474.56 is: 399,749.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    687,156.16 : 1,030,831.44 = 266,474.56 : x
  2. Step 2: Convert to fraction form
    687,156.16/1,030,831.44 = 266,474.56/x
  3. Step 3: Cross multiply
    687,156.16x = 1,030,831.44 × 266,474.56
  4. Step 4: Simplify right side
    687,156.16x = 274,690,354,408.17
  5. Step 5: Solve for x
    x = 274,690,354,408.17/687,156.16
  6. Step 6: Final answer
    x = 399,749.53

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1.5x scale

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.