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Finding the Fourth Proportional to 745,608.96, 1,028,952 and 406,076.88

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Solution

The fourth proportional to 745,608.96, 1,028,952 and 406,076.88 is: 560,392.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    745,608.96 : 1,028,952 = 406,076.88 : x
  2. Step 2: Convert to fraction form
    745,608.96/1,028,952 = 406,076.88/x
  3. Step 3: Cross multiply
    745,608.96x = 1,028,952 × 406,076.88
  4. Step 4: Simplify right side
    745,608.96x = 417,833,617,829.76
  5. Step 5: Solve for x
    x = 417,833,617,829.76/745,608.96
  6. Step 6: Final answer
    x = 560,392.43

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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.