Home / 644,311.62-889,152.12-357,831.71

Finding the Fourth Proportional to 644,311.62, 889,152.12 and 357,831.71

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Solution

The fourth proportional to 644,311.62, 889,152.12 and 357,831.71 is: 493,808.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    644,311.62 : 889,152.12 = 357,831.71 : x
  2. Step 2: Convert to fraction form
    644,311.62/889,152.12 = 357,831.71/x
  3. Step 3: Cross multiply
    644,311.62x = 889,152.12 × 357,831.71
  4. Step 4: Simplify right side
    644,311.62x = 318,166,821,096.42
  5. Step 5: Solve for x
    x = 318,166,821,096.42/644,311.62
  6. Step 6: Final answer
    x = 493,808.91

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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.