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Finding the Fourth Proportional to 490,695.80, 736,043.70 and 455,266.40

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Solution

The fourth proportional to 490,695.80, 736,043.70 and 455,266.40 is: 682,899.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    490,695.80 : 736,043.70 = 455,266.40 : x
  2. Step 2: Convert to fraction form
    490,695.80/736,043.70 = 455,266.40/x
  3. Step 3: Cross multiply
    490,695.80x = 736,043.70 × 455,266.40
  4. Step 4: Simplify right side
    490,695.80x = 335,095,965,541.68
  5. Step 5: Solve for x
    x = 335,095,965,541.68/490,695.80
  6. Step 6: Final answer
    x = 682,899.60

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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.