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Finding the Fourth Proportional to 525,021.90, 787,014.45 and 258,564.30

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Solution

The fourth proportional to 525,021.90, 787,014.45 and 258,564.30 is: 387,591.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    525,021.90 : 787,014.45 = 258,564.30 : x
  2. Step 2: Convert to fraction form
    525,021.90/787,014.45 = 258,564.30/x
  3. Step 3: Cross multiply
    525,021.90x = 787,014.45 × 258,564.30
  4. Step 4: Simplify right side
    525,021.90x = 203,493,840,354.14
  5. Step 5: Solve for x
    x = 203,493,840,354.14/525,021.90
  6. Step 6: Final answer
    x = 387,591.15

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1.5x scale

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.