Home / 529,808.21-731,139.13-288,089.05

Finding the Fourth Proportional to 529,808.21, 731,139.13 and 288,089.05

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Solution

The fourth proportional to 529,808.21, 731,139.13 and 288,089.05 is: 397,564.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    529,808.21 : 731,139.13 = 288,089.05 : x
  2. Step 2: Convert to fraction form
    529,808.21/731,139.13 = 288,089.05/x
  3. Step 3: Cross multiply
    529,808.21x = 731,139.13 × 288,089.05
  4. Step 4: Simplify right side
    529,808.21x = 210,633,177,379.53
  5. Step 5: Solve for x
    x = 210,633,177,379.53/529,808.21
  6. Step 6: Final answer
    x = 397,564.96

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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.