Home / 530,187.12-731,661.39-288,471.51

Finding the Fourth Proportional to 530,187.12, 731,661.39 and 288,471.51

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Solution

The fourth proportional to 530,187.12, 731,661.39 and 288,471.51 is: 398,092.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    530,187.12 : 731,661.39 = 288,471.51 : x
  2. Step 2: Convert to fraction form
    530,187.12/731,661.39 = 288,471.51/x
  3. Step 3: Cross multiply
    530,187.12x = 731,661.39 × 288,471.51
  4. Step 4: Simplify right side
    530,187.12x = 211,063,465,982.00
  5. Step 5: Solve for x
    x = 211,063,465,982.00/530,187.12
  6. Step 6: Final answer
    x = 398,092.41

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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.