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Finding the Fourth Proportional to 565,808.76, 780,800.52 and 311,159.94

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Solution

The fourth proportional to 565,808.76, 780,800.52 and 311,159.94 is: 429,392.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    565,808.76 : 780,800.52 = 311,159.94 : x
  2. Step 2: Convert to fraction form
    565,808.76/780,800.52 = 311,159.94/x
  3. Step 3: Cross multiply
    565,808.76x = 780,800.52 × 311,159.94
  4. Step 4: Simplify right side
    565,808.76x = 242,953,842,955.17
  5. Step 5: Solve for x
    x = 242,953,842,955.17/565,808.76
  6. Step 6: Final answer
    x = 429,392.16

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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.