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Finding the Fourth Proportional to 648,728.42, 895,241.66 and 358,359.96

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Solution

The fourth proportional to 648,728.42, 895,241.66 and 358,359.96 is: 494,534.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    648,728.42 : 895,241.66 = 358,359.96 : x
  2. Step 2: Convert to fraction form
    648,728.42/895,241.66 = 358,359.96/x
  3. Step 3: Cross multiply
    648,728.42x = 895,241.66 × 358,359.96
  4. Step 4: Simplify right side
    648,728.42x = 320,818,766,577.83
  5. Step 5: Solve for x
    x = 320,818,766,577.83/648,728.42
  6. Step 6: Final answer
    x = 494,534.78

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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.