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Finding the Fourth Proportional to 436,221.66, 602,444.82 and 388,671.73

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Solution

The fourth proportional to 436,221.66, 602,444.82 and 388,671.73 is: 536,775.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    436,221.66 : 602,444.82 = 388,671.73 : x
  2. Step 2: Convert to fraction form
    436,221.66/602,444.82 = 388,671.73/x
  3. Step 3: Cross multiply
    436,221.66x = 602,444.82 × 388,671.73
  4. Step 4: Simplify right side
    436,221.66x = 234,153,270,418.94
  5. Step 5: Solve for x
    x = 234,153,270,418.94/436,221.66
  6. Step 6: Final answer
    x = 536,775.89

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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.