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Finding the Fourth Proportional to 574,405.90, 792,679.87 and 319,817.23

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Solution

The fourth proportional to 574,405.90, 792,679.87 and 319,817.23 is: 441,347.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    574,405.90 : 792,679.87 = 319,817.23 : x
  2. Step 2: Convert to fraction form
    574,405.90/792,679.87 = 319,817.23/x
  3. Step 3: Cross multiply
    574,405.90x = 792,679.87 × 319,817.23
  4. Step 4: Simplify right side
    574,405.90x = 253,512,678,718.23
  5. Step 5: Solve for x
    x = 253,512,678,718.23/574,405.90
  6. Step 6: Final answer
    x = 441,347.63

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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.