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Finding the Fourth Proportional to 509,804.98, 703,514.76 and 280,361.55

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Solution

The fourth proportional to 509,804.98, 703,514.76 and 280,361.55 is: 386,890.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    509,804.98 : 703,514.76 = 280,361.55 : x
  2. Step 2: Convert to fraction form
    509,804.98/703,514.76 = 280,361.55/x
  3. Step 3: Cross multiply
    509,804.98x = 703,514.76 × 280,361.55
  4. Step 4: Simplify right side
    509,804.98x = 197,238,490,148.30
  5. Step 5: Solve for x
    x = 197,238,490,148.30/509,804.98
  6. Step 6: Final answer
    x = 386,890.08

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.