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Finding the Fourth Proportional to 565,810.88, 780,803.48 and 311,162.08

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Solution

The fourth proportional to 565,810.88, 780,803.48 and 311,162.08 is: 429,395.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    565,810.88 : 780,803.48 = 311,162.08 : x
  2. Step 2: Convert to fraction form
    565,810.88/780,803.48 = 311,162.08/x
  3. Step 3: Cross multiply
    565,810.88x = 780,803.48 × 311,162.08
  4. Step 4: Simplify right side
    565,810.88x = 242,956,434,908.04
  5. Step 5: Solve for x
    x = 242,956,434,908.04/565,810.88
  6. Step 6: Final answer
    x = 429,395.13

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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.