Home / 407,052.28-561,083.32-320,870.81

Finding the Fourth Proportional to 407,052.28, 561,083.32 and 320,870.81

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Solution

The fourth proportional to 407,052.28, 561,083.32 and 320,870.81 is: 442,290.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    407,052.28 : 561,083.32 = 320,870.81 : x
  2. Step 2: Convert to fraction form
    407,052.28/561,083.32 = 320,870.81/x
  3. Step 3: Cross multiply
    407,052.28x = 561,083.32 × 320,870.81
  4. Step 4: Simplify right side
    407,052.28x = 180,035,257,060.18
  5. Step 5: Solve for x
    x = 180,035,257,060.18/407,052.28
  6. Step 6: Final answer
    x = 442,290.26

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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.