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Finding the Fourth Proportional to 453,719.90, 626,069.72 and 300,520.55

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Solution

The fourth proportional to 453,719.90, 626,069.72 and 300,520.55 is: 414,676.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    453,719.90 : 626,069.72 = 300,520.55 : x
  2. Step 2: Convert to fraction form
    453,719.90/626,069.72 = 300,520.55/x
  3. Step 3: Cross multiply
    453,719.90x = 626,069.72 × 300,520.55
  4. Step 4: Simplify right side
    453,719.90x = 188,146,818,909.22
  5. Step 5: Solve for x
    x = 188,146,818,909.22/453,719.90
  6. Step 6: Final answer
    x = 414,676.14

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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.