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Finding the Fourth Proportional to 490,085.20, 735,300.60 and 472,805.20

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Solution

The fourth proportional to 490,085.20, 735,300.60 and 472,805.20 is: 709,374.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    490,085.20 : 735,300.60 = 472,805.20 : x
  2. Step 2: Convert to fraction form
    490,085.20/735,300.60 = 472,805.20/x
  3. Step 3: Cross multiply
    490,085.20x = 735,300.60 × 472,805.20
  4. Step 4: Simplify right side
    490,085.20x = 347,653,947,243.12
  5. Step 5: Solve for x
    x = 347,653,947,243.12/490,085.20
  6. Step 6: Final answer
    x = 709,374.51

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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.