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Finding the Fourth Proportional to 436,205.66, 602,422.73 and 388,655.72

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Solution

The fourth proportional to 436,205.66, 602,422.73 and 388,655.72 is: 536,753.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    436,205.66 : 602,422.73 = 388,655.72 : x
  2. Step 2: Convert to fraction form
    436,205.66/602,422.73 = 388,655.72/x
  3. Step 3: Cross multiply
    436,205.66x = 602,422.73 × 388,655.72
  4. Step 4: Simplify right side
    436,205.66x = 234,135,039,872.52
  5. Step 5: Solve for x
    x = 234,135,039,872.52/436,205.66
  6. Step 6: Final answer
    x = 536,753.79

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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.