Home / 410,506.72-566,890.55-388,142.21

Finding the Fourth Proportional to 410,506.72, 566,890.55 and 388,142.21

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Solution

The fourth proportional to 410,506.72, 566,890.55 and 388,142.21 is: 536,006.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    410,506.72 : 566,890.55 = 388,142.21 : x
  2. Step 2: Convert to fraction form
    410,506.72/566,890.55 = 388,142.21/x
  3. Step 3: Cross multiply
    410,506.72x = 566,890.55 × 388,142.21
  4. Step 4: Simplify right side
    410,506.72x = 220,034,151,837.16
  5. Step 5: Solve for x
    x = 220,034,151,837.16/410,506.72
  6. Step 6: Final answer
    x = 536,006.21

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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.