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Finding the Fourth Proportional to 542,670, 748,884.60 and 300,989.58

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Solution

The fourth proportional to 542,670, 748,884.60 and 300,989.58 is: 415,365.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    542,670 : 748,884.60 = 300,989.58 : x
  2. Step 2: Convert to fraction form
    542,670/748,884.60 = 300,989.58/x
  3. Step 3: Cross multiply
    542,670x = 748,884.60 × 300,989.58
  4. Step 4: Simplify right side
    542,670x = 225,406,461,222.47
  5. Step 5: Solve for x
    x = 225,406,461,222.47/542,670
  6. Step 6: Final answer
    x = 415,365.62

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1.5x scale

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.