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Finding the Fourth Proportional to 490,276.80, 735,415.20 and 487,166.40

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Solution

The fourth proportional to 490,276.80, 735,415.20 and 487,166.40 is: 730,749.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    490,276.80 : 735,415.20 = 487,166.40 : x
  2. Step 2: Convert to fraction form
    490,276.80/735,415.20 = 487,166.40/x
  3. Step 3: Cross multiply
    490,276.80x = 735,415.20 × 487,166.40
  4. Step 4: Simplify right side
    490,276.80x = 358,269,575,489.28
  5. Step 5: Solve for x
    x = 358,269,575,489.28/490,276.80
  6. Step 6: Final answer
    x = 730,749.60

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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.