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Finding the Fourth Proportional to 565,850.68, 780,888.72 and 311,208.55

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Solution

The fourth proportional to 565,850.68, 780,888.72 and 311,208.55 is: 429,475.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    565,850.68 : 780,888.72 = 311,208.55 : x
  2. Step 2: Convert to fraction form
    565,850.68/780,888.72 = 311,208.55/x
  3. Step 3: Cross multiply
    565,850.68x = 780,888.72 × 311,208.55
  4. Step 4: Simplify right side
    565,850.68x = 243,019,246,262.56
  5. Step 5: Solve for x
    x = 243,019,246,262.56/565,850.68
  6. Step 6: Final answer
    x = 429,475.93

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1.5x scale

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.