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Finding the Fourth Proportional to 545,709.31, 819,122.55 and 450,636.58

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Solution

The fourth proportional to 545,709.31, 819,122.55 and 450,636.58 is: 676,416.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    545,709.31 : 819,122.55 = 450,636.58 : x
  2. Step 2: Convert to fraction form
    545,709.31/819,122.55 = 450,636.58/x
  3. Step 3: Cross multiply
    545,709.31x = 819,122.55 × 450,636.58
  4. Step 4: Simplify right side
    545,709.31x = 369,126,581,563.86
  5. Step 5: Solve for x
    x = 369,126,581,563.86/545,709.31
  6. Step 6: Final answer
    x = 676,416.13

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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.