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Finding the Fourth Proportional to 720,748.89, 994,395.75 and 462,770.37

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Solution

The fourth proportional to 720,748.89, 994,395.75 and 462,770.37 is: 638,470.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    720,748.89 : 994,395.75 = 462,770.37 : x
  2. Step 2: Convert to fraction form
    720,748.89/994,395.75 = 462,770.37/x
  3. Step 3: Cross multiply
    720,748.89x = 994,395.75 × 462,770.37
  4. Step 4: Simplify right side
    720,748.89x = 460,176,887,418.54
  5. Step 5: Solve for x
    x = 460,176,887,418.54/720,748.89
  6. Step 6: Final answer
    x = 638,470.48

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Half scale
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Double scale
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Similar ratio
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1.5x scale

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.