Home / 685,206.90-945,554.85-379,294.74

Finding the Fourth Proportional to 685,206.90, 945,554.85 and 379,294.74

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Solution

The fourth proportional to 685,206.90, 945,554.85 and 379,294.74 is: 523,409.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    685,206.90 : 945,554.85 = 379,294.74 : x
  2. Step 2: Convert to fraction form
    685,206.90/945,554.85 = 379,294.74/x
  3. Step 3: Cross multiply
    685,206.90x = 945,554.85 × 379,294.74
  4. Step 4: Simplify right side
    685,206.90x = 358,643,980,986.49
  5. Step 5: Solve for x
    x = 358,643,980,986.49/685,206.90
  6. Step 6: Final answer
    x = 523,409.76

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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.