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Finding the Fourth Proportional to 565,506.52, 780,399.84 and 310,859.26

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Solution

The fourth proportional to 565,506.52, 780,399.84 and 310,859.26 is: 428,986.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    565,506.52 : 780,399.84 = 310,859.26 : x
  2. Step 2: Convert to fraction form
    565,506.52/780,399.84 = 310,859.26/x
  3. Step 3: Cross multiply
    565,506.52x = 780,399.84 × 310,859.26
  4. Step 4: Simplify right side
    565,506.52x = 242,594,516,766.52
  5. Step 5: Solve for x
    x = 242,594,516,766.52/565,506.52
  6. Step 6: Final answer
    x = 428,986.24

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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.