Home / 858,401.28-1,287,831.54-297,435.78

Finding the Fourth Proportional to 858,401.28, 1,287,831.54 and 297,435.78

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Solution

The fourth proportional to 858,401.28, 1,287,831.54 and 297,435.78 is: 446,233.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    858,401.28 : 1,287,831.54 = 297,435.78 : x
  2. Step 2: Convert to fraction form
    858,401.28/1,287,831.54 = 297,435.78/x
  3. Step 3: Cross multiply
    858,401.28x = 1,287,831.54 × 297,435.78
  4. Step 4: Simplify right side
    858,401.28x = 383,047,178,608.50
  5. Step 5: Solve for x
    x = 383,047,178,608.50/858,401.28
  6. Step 6: Final answer
    x = 446,233.23

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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.