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Finding the Fourth Proportional to 724,015.45, 995,598.30 and 628,356.07

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Solution

The fourth proportional to 724,015.45, 995,598.30 and 628,356.07 is: 864,056.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    724,015.45 : 995,598.30 = 628,356.07 : x
  2. Step 2: Convert to fraction form
    724,015.45/995,598.30 = 628,356.07/x
  3. Step 3: Cross multiply
    724,015.45x = 995,598.30 × 628,356.07
  4. Step 4: Simplify right side
    724,015.45x = 625,590,235,086.68
  5. Step 5: Solve for x
    x = 625,590,235,086.68/724,015.45
  6. Step 6: Final answer
    x = 864,056.47

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Double scale
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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.