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Finding the Fourth Proportional to 565,653.20, 780,581.44 and 311,002.40

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Solution

The fourth proportional to 565,653.20, 780,581.44 and 311,002.40 is: 429,172.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    565,653.20 : 780,581.44 = 311,002.40 : x
  2. Step 2: Convert to fraction form
    565,653.20/780,581.44 = 311,002.40/x
  3. Step 3: Cross multiply
    565,653.20x = 780,581.44 × 311,002.40
  4. Step 4: Simplify right side
    565,653.20x = 242,762,701,235.46
  5. Step 5: Solve for x
    x = 242,762,701,235.46/565,653.20
  6. Step 6: Final answer
    x = 429,172.33

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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.