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Finding the Fourth Proportional to 492,624.11, 680,131.55 and 377,689.64

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Solution

The fourth proportional to 492,624.11, 680,131.55 and 377,689.64 is: 521,449.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    492,624.11 : 680,131.55 = 377,689.64 : x
  2. Step 2: Convert to fraction form
    492,624.11/680,131.55 = 377,689.64/x
  3. Step 3: Cross multiply
    492,624.11x = 680,131.55 × 377,689.64
  4. Step 4: Simplify right side
    492,624.11x = 256,878,637,815.71
  5. Step 5: Solve for x
    x = 256,878,637,815.71/492,624.11
  6. Step 6: Final answer
    x = 521,449.58

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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.