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Finding the Fourth Proportional to 602,685.82, 904,179.21 and 425,539.18

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Solution

The fourth proportional to 602,685.82, 904,179.21 and 425,539.18 is: 638,415.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    602,685.82 : 904,179.21 = 425,539.18 : x
  2. Step 2: Convert to fraction form
    602,685.82/904,179.21 = 425,539.18/x
  3. Step 3: Cross multiply
    602,685.82x = 904,179.21 × 425,539.18
  4. Step 4: Simplify right side
    602,685.82x = 384,763,679,596.45
  5. Step 5: Solve for x
    x = 384,763,679,596.45/602,685.82
  6. Step 6: Final answer
    x = 638,415.02

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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.