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Finding the Fourth Proportional to 490,078.20, 735,290.10 and 472,798.20

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Solution

The fourth proportional to 490,078.20, 735,290.10 and 472,798.20 is: 709,364.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    490,078.20 : 735,290.10 = 472,798.20 : x
  2. Step 2: Convert to fraction form
    490,078.20/735,290.10 = 472,798.20/x
  3. Step 3: Cross multiply
    490,078.20x = 735,290.10 × 472,798.20
  4. Step 4: Simplify right side
    490,078.20x = 347,643,835,757.82
  5. Step 5: Solve for x
    x = 347,643,835,757.82/490,078.20
  6. Step 6: Final answer
    x = 709,364.01

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1.5x scale

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.