Home / 428,683.47-591,528.81-235,040.22

Finding the Fourth Proportional to 428,683.47, 591,528.81 and 235,040.22

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Solution

The fourth proportional to 428,683.47, 591,528.81 and 235,040.22 is: 324,325.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    428,683.47 : 591,528.81 = 235,040.22 : x
  2. Step 2: Convert to fraction form
    428,683.47/591,528.81 = 235,040.22/x
  3. Step 3: Cross multiply
    428,683.47x = 591,528.81 × 235,040.22
  4. Step 4: Simplify right side
    428,683.47x = 139,033,061,638.74
  5. Step 5: Solve for x
    x = 139,033,061,638.74/428,683.47
  6. Step 6: Final answer
    x = 324,325.69

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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.