Home / 917,571.18-1,376,370.62-318,551.40

Finding the Fourth Proportional to 917,571.18, 1,376,370.62 and 318,551.40

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Solution

The fourth proportional to 917,571.18, 1,376,370.62 and 318,551.40 is: 477,831.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    917,571.18 : 1,376,370.62 = 318,551.40 : x
  2. Step 2: Convert to fraction form
    917,571.18/1,376,370.62 = 318,551.40/x
  3. Step 3: Cross multiply
    917,571.18x = 1,376,370.62 × 318,551.40
  4. Step 4: Simplify right side
    917,571.18x = 438,444,787,919.87
  5. Step 5: Solve for x
    x = 438,444,787,919.87/917,571.18
  6. Step 6: Final answer
    x = 477,831.91

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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.