Home / 685,429.58-945,927.78-379,539.81

Finding the Fourth Proportional to 685,429.58, 945,927.78 and 379,539.81

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Solution

The fourth proportional to 685,429.58, 945,927.78 and 379,539.81 is: 523,784.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    685,429.58 : 945,927.78 = 379,539.81 : x
  2. Step 2: Convert to fraction form
    685,429.58/945,927.78 = 379,539.81/x
  3. Step 3: Cross multiply
    685,429.58x = 945,927.78 × 379,539.81
  4. Step 4: Simplify right side
    685,429.58x = 359,017,249,894.92
  5. Step 5: Solve for x
    x = 359,017,249,894.92/685,429.58
  6. Step 6: Final answer
    x = 523,784.30

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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.