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Finding the Fourth Proportional to 394,477.28, 544,382 and 364,340.32

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Solution

The fourth proportional to 394,477.28, 544,382 and 364,340.32 is: 502,792.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    394,477.28 : 544,382 = 364,340.32 : x
  2. Step 2: Convert to fraction form
    394,477.28/544,382 = 364,340.32/x
  3. Step 3: Cross multiply
    394,477.28x = 544,382 × 364,340.32
  4. Step 4: Simplify right side
    394,477.28x = 198,340,312,082.24
  5. Step 5: Solve for x
    x = 198,340,312,082.24/394,477.28
  6. Step 6: Final answer
    x = 502,792.74

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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.