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Finding the Fourth Proportional to 565,507.52, 780,401.22 and 310,860.26

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Solution

The fourth proportional to 565,507.52, 780,401.22 and 310,860.26 is: 428,987.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    565,507.52 : 780,401.22 = 310,860.26 : x
  2. Step 2: Convert to fraction form
    565,507.52/780,401.22 = 310,860.26/x
  3. Step 3: Cross multiply
    565,507.52x = 780,401.22 × 310,860.26
  4. Step 4: Simplify right side
    565,507.52x = 242,595,726,153.52
  5. Step 5: Solve for x
    x = 242,595,726,153.52/565,507.52
  6. Step 6: Final answer
    x = 428,987.62

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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.