Home / 685,256.85-945,643.01-379,326.77

Finding the Fourth Proportional to 685,256.85, 945,643.01 and 379,326.77

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Solution

The fourth proportional to 685,256.85, 945,643.01 and 379,326.77 is: 523,464.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    685,256.85 : 945,643.01 = 379,326.77 : x
  2. Step 2: Convert to fraction form
    685,256.85/945,643.01 = 379,326.77/x
  3. Step 3: Cross multiply
    685,256.85x = 945,643.01 × 379,326.77
  4. Step 4: Simplify right side
    685,256.85x = 358,707,701,931.53
  5. Step 5: Solve for x
    x = 358,707,701,931.53/685,256.85
  6. Step 6: Final answer
    x = 523,464.60

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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.