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Finding the Fourth Proportional to 525,980.88, 788,427 and 259,385.04

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Solution

The fourth proportional to 525,980.88, 788,427 and 259,385.04 is: 388,809.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    525,980.88 : 788,427 = 259,385.04 : x
  2. Step 2: Convert to fraction form
    525,980.88/788,427 = 259,385.04/x
  3. Step 3: Cross multiply
    525,980.88x = 788,427 × 259,385.04
  4. Step 4: Simplify right side
    525,980.88x = 204,506,168,932.08
  5. Step 5: Solve for x
    x = 204,506,168,932.08/525,980.88
  6. Step 6: Final answer
    x = 388,809.13

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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.