Home / 525,020.40-787,012.20-258,562.80

Finding the Fourth Proportional to 525,020.40, 787,012.20 and 258,562.80

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Solution

The fourth proportional to 525,020.40, 787,012.20 and 258,562.80 is: 387,588.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    525,020.40 : 787,012.20 = 258,562.80 : x
  2. Step 2: Convert to fraction form
    525,020.40/787,012.20 = 258,562.80/x
  3. Step 3: Cross multiply
    525,020.40x = 787,012.20 × 258,562.80
  4. Step 4: Simplify right side
    525,020.40x = 203,492,078,066.16
  5. Step 5: Solve for x
    x = 203,492,078,066.16/525,020.40
  6. Step 6: Final answer
    x = 387,588.90

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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.