Home / 530,272.20-731,783.34-288,561.72

Finding the Fourth Proportional to 530,272.20, 731,783.34 and 288,561.72

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Solution

The fourth proportional to 530,272.20, 731,783.34 and 288,561.72 is: 398,219.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    530,272.20 : 731,783.34 = 288,561.72 : x
  2. Step 2: Convert to fraction form
    530,272.20/731,783.34 = 288,561.72/x
  3. Step 3: Cross multiply
    530,272.20x = 731,783.34 × 288,561.72
  4. Step 4: Simplify right side
    530,272.20x = 211,164,659,257.75
  5. Step 5: Solve for x
    x = 211,164,659,257.75/530,272.20
  6. Step 6: Final answer
    x = 398,219.37

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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.