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Finding the Fourth Proportional to 565,236.10, 780,025.63 and 310,603.69

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Solution

The fourth proportional to 565,236.10, 780,025.63 and 310,603.69 is: 428,632.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    565,236.10 : 780,025.63 = 310,603.69 : x
  2. Step 2: Convert to fraction form
    565,236.10/780,025.63 = 310,603.69/x
  3. Step 3: Cross multiply
    565,236.10x = 780,025.63 × 310,603.69
  4. Step 4: Simplify right side
    565,236.10x = 242,278,835,072.45
  5. Step 5: Solve for x
    x = 242,278,835,072.45/565,236.10
  6. Step 6: Final answer
    x = 428,632.99

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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.