Home / 525,820.40-788,788.20-509,231.60

Finding the Fourth Proportional to 525,820.40, 788,788.20 and 509,231.60

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Solution

The fourth proportional to 525,820.40, 788,788.20 and 509,231.60 is: 763,903.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    525,820.40 : 788,788.20 = 509,231.60 : x
  2. Step 2: Convert to fraction form
    525,820.40/788,788.20 = 509,231.60/x
  3. Step 3: Cross multiply
    525,820.40x = 788,788.20 × 509,231.60
  4. Step 4: Simplify right side
    525,820.40x = 401,675,877,147.12
  5. Step 5: Solve for x
    x = 401,675,877,147.12/525,820.40
  6. Step 6: Final answer
    x = 763,903.18

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.