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Finding the Fourth Proportional to 648,743, 895,261.79 and 358,374.56

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Solution

The fourth proportional to 648,743, 895,261.79 and 358,374.56 is: 494,554.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    648,743 : 895,261.79 = 358,374.56 : x
  2. Step 2: Convert to fraction form
    648,743/895,261.79 = 358,374.56/x
  3. Step 3: Cross multiply
    648,743x = 895,261.79 × 358,374.56
  4. Step 4: Simplify right side
    648,743x = 320,839,048,284.19
  5. Step 5: Solve for x
    x = 320,839,048,284.19/648,743
  6. Step 6: Final answer
    x = 494,554.93

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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.