Home / 720,416.50-1,080,811.40-383,179.57

Finding the Fourth Proportional to 720,416.50, 1,080,811.40 and 383,179.57

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Solution

The fourth proportional to 720,416.50, 1,080,811.40 and 383,179.57 is: 574,868.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    720,416.50 : 1,080,811.40 = 383,179.57 : x
  2. Step 2: Convert to fraction form
    720,416.50/1,080,811.40 = 383,179.57/x
  3. Step 3: Cross multiply
    720,416.50x = 1,080,811.40 × 383,179.57
  4. Step 4: Simplify right side
    720,416.50x = 414,144,842,885.17
  5. Step 5: Solve for x
    x = 414,144,842,885.17/720,416.50
  6. Step 6: Final answer
    x = 574,868.63

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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.