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Finding the Fourth Proportional to 576,063.30, 795,266.35 and 420,840.40

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Solution

The fourth proportional to 576,063.30, 795,266.35 and 420,840.40 is: 580,978.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    576,063.30 : 795,266.35 = 420,840.40 : x
  2. Step 2: Convert to fraction form
    576,063.30/795,266.35 = 420,840.40/x
  3. Step 3: Cross multiply
    576,063.30x = 795,266.35 × 420,840.40
  4. Step 4: Simplify right side
    576,063.30x = 334,680,208,840.54
  5. Step 5: Solve for x
    x = 334,680,208,840.54/576,063.30
  6. Step 6: Final answer
    x = 580,978.18

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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.