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Finding the Fourth Proportional to 537,938.80, 806,908.20 and 369,977.20

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Solution

The fourth proportional to 537,938.80, 806,908.20 and 369,977.20 is: 554,965.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    537,938.80 : 806,908.20 = 369,977.20 : x
  2. Step 2: Convert to fraction form
    537,938.80/806,908.20 = 369,977.20/x
  3. Step 3: Cross multiply
    537,938.80x = 806,908.20 × 369,977.20
  4. Step 4: Simplify right side
    537,938.80x = 298,537,636,493.04
  5. Step 5: Solve for x
    x = 298,537,636,493.04/537,938.80
  6. Step 6: Final answer
    x = 554,965.80

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.