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Finding the Fourth Proportional to 565,717.04, 780,709.60 and 311,087.60

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Solution

The fourth proportional to 565,717.04, 780,709.60 and 311,087.60 is: 429,311.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    565,717.04 : 780,709.60 = 311,087.60 : x
  2. Step 2: Convert to fraction form
    565,717.04/780,709.60 = 311,087.60/x
  3. Step 3: Cross multiply
    565,717.04x = 780,709.60 × 311,087.60
  4. Step 4: Simplify right side
    565,717.04x = 242,869,075,760.96
  5. Step 5: Solve for x
    x = 242,869,075,760.96/565,717.04
  6. Step 6: Final answer
    x = 429,311.93

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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.