Home / 529,860.92-731,212.96-288,145.76

Finding the Fourth Proportional to 529,860.92, 731,212.96 and 288,145.76

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Solution

The fourth proportional to 529,860.92, 731,212.96 and 288,145.76 is: 397,643.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    529,860.92 : 731,212.96 = 288,145.76 : x
  2. Step 2: Convert to fraction form
    529,860.92/731,212.96 = 288,145.76/x
  3. Step 3: Cross multiply
    529,860.92x = 731,212.96 × 288,145.76
  4. Step 4: Simplify right side
    529,860.92x = 210,695,914,081.05
  5. Step 5: Solve for x
    x = 210,695,914,081.05/529,860.92
  6. Step 6: Final answer
    x = 397,643.81

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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.