Home / 685,011.92-945,315.08-383,205.92

Finding the Fourth Proportional to 685,011.92, 945,315.08 and 383,205.92

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Solution

The fourth proportional to 685,011.92, 945,315.08 and 383,205.92 is: 528,823.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    685,011.92 : 945,315.08 = 383,205.92 : x
  2. Step 2: Convert to fraction form
    685,011.92/945,315.08 = 383,205.92/x
  3. Step 3: Cross multiply
    685,011.92x = 945,315.08 × 383,205.92
  4. Step 4: Simplify right side
    685,011.92x = 362,250,334,921.27
  5. Step 5: Solve for x
    x = 362,250,334,921.27/685,011.92
  6. Step 6: Final answer
    x = 528,823.40

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Double scale
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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.