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Finding the Fourth Proportional to 613,046.48, 845,726.28 and 443,011.28

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Solution

The fourth proportional to 613,046.48, 845,726.28 and 443,011.28 is: 611,154.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    613,046.48 : 845,726.28 = 443,011.28 : x
  2. Step 2: Convert to fraction form
    613,046.48/845,726.28 = 443,011.28/x
  3. Step 3: Cross multiply
    613,046.48x = 845,726.28 × 443,011.28
  4. Step 4: Simplify right side
    613,046.48x = 374,666,281,832.44
  5. Step 5: Solve for x
    x = 374,666,281,832.44/613,046.48
  6. Step 6: Final answer
    x = 611,154.77

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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.