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Finding the Fourth Proportional to 565,560.30, 780,453.39 and 310,909.68

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Solution

The fourth proportional to 565,560.30, 780,453.39 and 310,909.68 is: 429,044.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    565,560.30 : 780,453.39 = 310,909.68 : x
  2. Step 2: Convert to fraction form
    565,560.30/780,453.39 = 310,909.68/x
  3. Step 3: Cross multiply
    565,560.30x = 780,453.39 × 310,909.68
  4. Step 4: Simplify right side
    565,560.30x = 242,650,513,739.82
  5. Step 5: Solve for x
    x = 242,650,513,739.82/565,560.30
  6. Step 6: Final answer
    x = 429,044.46

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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.