Home / 919,506.60-1,379,311.74-279,831.15

Finding the Fourth Proportional to 919,506.60, 1,379,311.74 and 279,831.15

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Solution

The fourth proportional to 919,506.60, 1,379,311.74 and 279,831.15 is: 419,762.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    919,506.60 : 1,379,311.74 = 279,831.15 : x
  2. Step 2: Convert to fraction form
    919,506.60/1,379,311.74 = 279,831.15/x
  3. Step 3: Cross multiply
    919,506.60x = 1,379,311.74 × 279,831.15
  4. Step 4: Simplify right side
    919,506.60x = 385,974,390,412.70
  5. Step 5: Solve for x
    x = 385,974,390,412.70/919,506.60
  6. Step 6: Final answer
    x = 419,762.50

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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.