Home / 530,189.26-731,639.28-288,472.81

Finding the Fourth Proportional to 530,189.26, 731,639.28 and 288,472.81

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Solution

The fourth proportional to 530,189.26, 731,639.28 and 288,472.81 is: 398,080.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    530,189.26 : 731,639.28 = 288,472.81 : x
  2. Step 2: Convert to fraction form
    530,189.26/731,639.28 = 288,472.81/x
  3. Step 3: Cross multiply
    530,189.26x = 731,639.28 × 288,472.81
  4. Step 4: Simplify right side
    530,189.26x = 211,058,039,007.98
  5. Step 5: Solve for x
    x = 211,058,039,007.98/530,189.26
  6. Step 6: Final answer
    x = 398,080.56

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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.