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Finding the Fourth Proportional to 565,625.81, 780,566.55 and 310,993.40

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Solution

The fourth proportional to 565,625.81, 780,566.55 and 310,993.40 is: 429,172.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    565,625.81 : 780,566.55 = 310,993.40 : x
  2. Step 2: Convert to fraction form
    565,625.81/780,566.55 = 310,993.40/x
  3. Step 3: Cross multiply
    565,625.81x = 780,566.55 × 310,993.40
  4. Step 4: Simplify right side
    565,625.81x = 242,751,045,310.77
  5. Step 5: Solve for x
    x = 242,751,045,310.77/565,625.81
  6. Step 6: Final answer
    x = 429,172.50

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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.