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Finding the Fourth Proportional to 453,503.80, 626,698.38 and 340,129.72

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Solution

The fourth proportional to 453,503.80, 626,698.38 and 340,129.72 is: 470,026.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    453,503.80 : 626,698.38 = 340,129.72 : x
  2. Step 2: Convert to fraction form
    453,503.80/626,698.38 = 340,129.72/x
  3. Step 3: Cross multiply
    453,503.80x = 626,698.38 × 340,129.72
  4. Step 4: Simplify right side
    453,503.80x = 213,158,744,513.85
  5. Step 5: Solve for x
    x = 213,158,744,513.85/453,503.80
  6. Step 6: Final answer
    x = 470,026.37

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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.