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Finding the Fourth Proportional to 565,216.56, 780,036.12 and 310,569.84

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Solution

The fourth proportional to 565,216.56, 780,036.12 and 310,569.84 is: 428,606.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    565,216.56 : 780,036.12 = 310,569.84 : x
  2. Step 2: Convert to fraction form
    565,216.56/780,036.12 = 310,569.84/x
  3. Step 3: Cross multiply
    565,216.56x = 780,036.12 × 310,569.84
  4. Step 4: Simplify right side
    565,216.56x = 242,255,692,982.62
  5. Step 5: Solve for x
    x = 242,255,692,982.62/565,216.56
  6. Step 6: Final answer
    x = 428,606.86

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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.