Home / 685,909.20-946,544.48-379,984.95

Finding the Fourth Proportional to 685,909.20, 946,544.48 and 379,984.95

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Solution

The fourth proportional to 685,909.20, 946,544.48 and 379,984.95 is: 524,373.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    685,909.20 : 946,544.48 = 379,984.95 : x
  2. Step 2: Convert to fraction form
    685,909.20/946,544.48 = 379,984.95/x
  3. Step 3: Cross multiply
    685,909.20x = 946,544.48 × 379,984.95
  4. Step 4: Simplify right side
    685,909.20x = 359,672,655,005.65
  5. Step 5: Solve for x
    x = 359,672,655,005.65/685,909.20
  6. Step 6: Final answer
    x = 524,373.57

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1.5x scale

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.