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Finding the Fourth Proportional to 684,940.48, 945,482.79 and 613,195.81

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Solution

The fourth proportional to 684,940.48, 945,482.79 and 613,195.81 is: 846,447.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    684,940.48 : 945,482.79 = 613,195.81 : x
  2. Step 2: Convert to fraction form
    684,940.48/945,482.79 = 613,195.81/x
  3. Step 3: Cross multiply
    684,940.48x = 945,482.79 × 613,195.81
  4. Step 4: Simplify right side
    684,940.48x = 579,766,085,190.89
  5. Step 5: Solve for x
    x = 579,766,085,190.89/684,940.48
  6. Step 6: Final answer
    x = 846,447.40

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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.