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Finding the Fourth Proportional to 525,634.40, 788,451.60 and 520,104.80

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Solution

The fourth proportional to 525,634.40, 788,451.60 and 520,104.80 is: 780,157.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    525,634.40 : 788,451.60 = 520,104.80 : x
  2. Step 2: Convert to fraction form
    525,634.40/788,451.60 = 520,104.80/x
  3. Step 3: Cross multiply
    525,634.40x = 788,451.60 × 520,104.80
  4. Step 4: Simplify right side
    525,634.40x = 410,077,461,727.68
  5. Step 5: Solve for x
    x = 410,077,461,727.68/525,634.40
  6. Step 6: Final answer
    x = 780,157.20

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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.