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Finding the Fourth Proportional to 652,566.54, 978,810.42 and 388,010.58

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Solution

The fourth proportional to 652,566.54, 978,810.42 and 388,010.58 is: 581,992.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    652,566.54 : 978,810.42 = 388,010.58 : x
  2. Step 2: Convert to fraction form
    652,566.54/978,810.42 = 388,010.58/x
  3. Step 3: Cross multiply
    652,566.54x = 978,810.42 × 388,010.58
  4. Step 4: Simplify right side
    652,566.54x = 379,788,798,774.24
  5. Step 5: Solve for x
    x = 379,788,798,774.24/652,566.54
  6. Step 6: Final answer
    x = 581,992.45

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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.