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Finding the Fourth Proportional to 643,576.80, 888,012.72 and 368,022.12

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Solution

The fourth proportional to 643,576.80, 888,012.72 and 368,022.12 is: 507,800.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    643,576.80 : 888,012.72 = 368,022.12 : x
  2. Step 2: Convert to fraction form
    643,576.80/888,012.72 = 368,022.12/x
  3. Step 3: Cross multiply
    643,576.80x = 888,012.72 × 368,022.12
  4. Step 4: Simplify right side
    643,576.80x = 326,808,323,801.37
  5. Step 5: Solve for x
    x = 326,808,323,801.37/643,576.80
  6. Step 6: Final answer
    x = 507,800.04

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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.