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Finding the Fourth Proportional to 687,497.49, 948,756.65 and 381,593.50

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Solution

The fourth proportional to 687,497.49, 948,756.65 and 381,593.50 is: 526,604.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    687,497.49 : 948,756.65 = 381,593.50 : x
  2. Step 2: Convert to fraction form
    687,497.49/948,756.65 = 381,593.50/x
  3. Step 3: Cross multiply
    687,497.49x = 948,756.65 × 381,593.50
  4. Step 4: Simplify right side
    687,497.49x = 362,039,366,441.92
  5. Step 5: Solve for x
    x = 362,039,366,441.92/687,497.49
  6. Step 6: Final answer
    x = 526,604.64

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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.