Home / 685,531.31-945,967.16-409,834.69

Finding the Fourth Proportional to 685,531.31, 945,967.16 and 409,834.69

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Solution

The fourth proportional to 685,531.31, 945,967.16 and 409,834.69 is: 565,532.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    685,531.31 : 945,967.16 = 409,834.69 : x
  2. Step 2: Convert to fraction form
    685,531.31/945,967.16 = 409,834.69/x
  3. Step 3: Cross multiply
    685,531.31x = 945,967.16 × 409,834.69
  4. Step 4: Simplify right side
    685,531.31x = 387,690,156,428.45
  5. Step 5: Solve for x
    x = 387,690,156,428.45/685,531.31
  6. Step 6: Final answer
    x = 565,532.39

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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.