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Finding the Fourth Proportional to 565,591.99, 780,522.24 and 310,945

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Solution

The fourth proportional to 565,591.99, 780,522.24 and 310,945 is: 429,107.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    565,591.99 : 780,522.24 = 310,945 : x
  2. Step 2: Convert to fraction form
    565,591.99/780,522.24 = 310,945/x
  3. Step 3: Cross multiply
    565,591.99x = 780,522.24 × 310,945
  4. Step 4: Simplify right side
    565,591.99x = 242,699,487,916.80
  5. Step 5: Solve for x
    x = 242,699,487,916.80/565,591.99
  6. Step 6: Final answer
    x = 429,107.01

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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.