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Finding the Fourth Proportional to 705,847.50, 974,069.55 and 387,895.50

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Solution

The fourth proportional to 705,847.50, 974,069.55 and 387,895.50 is: 535,295.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    705,847.50 : 974,069.55 = 387,895.50 : x
  2. Step 2: Convert to fraction form
    705,847.50/974,069.55 = 387,895.50/x
  3. Step 3: Cross multiply
    705,847.50x = 974,069.55 × 387,895.50
  4. Step 4: Simplify right side
    705,847.50x = 377,837,195,132.03
  5. Step 5: Solve for x
    x = 377,837,195,132.03/705,847.50
  6. Step 6: Final answer
    x = 535,295.79

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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.