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Finding the Fourth Proportional to 565,838.48, 780,841.52 and 311,189.76

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Solution

The fourth proportional to 565,838.48, 780,841.52 and 311,189.76 is: 429,433.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    565,838.48 : 780,841.52 = 311,189.76 : x
  2. Step 2: Convert to fraction form
    565,838.48/780,841.52 = 311,189.76/x
  3. Step 3: Cross multiply
    565,838.48x = 780,841.52 × 311,189.76
  4. Step 4: Simplify right side
    565,838.48x = 242,989,885,206.84
  5. Step 5: Solve for x
    x = 242,989,885,206.84/565,838.48
  6. Step 6: Final answer
    x = 429,433.30

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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.