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Finding the Fourth Proportional to 565,612.04, 780,549.84 and 310,965

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Solution

The fourth proportional to 565,612.04, 780,549.84 and 310,965 is: 429,134.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    565,612.04 : 780,549.84 = 310,965 : x
  2. Step 2: Convert to fraction form
    565,612.04/780,549.84 = 310,965/x
  3. Step 3: Cross multiply
    565,612.04x = 780,549.84 × 310,965
  4. Step 4: Simplify right side
    565,612.04x = 242,723,680,995.60
  5. Step 5: Solve for x
    x = 242,723,680,995.60/565,612.04
  6. Step 6: Final answer
    x = 429,134.57

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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.