Home / 652,128.66-899,946.75-393,969.72

Finding the Fourth Proportional to 652,128.66, 899,946.75 and 393,969.72

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Solution

The fourth proportional to 652,128.66, 899,946.75 and 393,969.72 is: 543,683.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    652,128.66 : 899,946.75 = 393,969.72 : x
  2. Step 2: Convert to fraction form
    652,128.66/899,946.75 = 393,969.72/x
  3. Step 3: Cross multiply
    652,128.66x = 899,946.75 × 393,969.72
  4. Step 4: Simplify right side
    652,128.66x = 354,551,769,112.41
  5. Step 5: Solve for x
    x = 354,551,769,112.41/652,128.66
  6. Step 6: Final answer
    x = 543,683.77

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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.