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Finding the Fourth Proportional to 684,938.09, 945,479.55 and 613,193.56

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Solution

The fourth proportional to 684,938.09, 945,479.55 and 613,193.56 is: 846,444.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    684,938.09 : 945,479.55 = 613,193.56 : x
  2. Step 2: Convert to fraction form
    684,938.09/945,479.55 = 613,193.56/x
  3. Step 3: Cross multiply
    684,938.09x = 945,479.55 × 613,193.56
  4. Step 4: Simplify right side
    684,938.09x = 579,761,971,107.48
  5. Step 5: Solve for x
    x = 579,761,971,107.48/684,938.09
  6. Step 6: Final answer
    x = 846,444.34

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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.