Home / 565,774.02-780,788.97-311,148.90

Finding the Fourth Proportional to 565,774.02, 780,788.97 and 311,148.90

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Solution

The fourth proportional to 565,774.02, 780,788.97 and 311,148.90 is: 429,396.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    565,774.02 : 780,788.97 = 311,148.90 : x
  2. Step 2: Convert to fraction form
    565,774.02/780,788.97 = 311,148.90/x
  3. Step 3: Cross multiply
    565,774.02x = 780,788.97 × 311,148.90
  4. Step 4: Simplify right side
    565,774.02x = 242,941,629,147.63
  5. Step 5: Solve for x
    x = 242,941,629,147.63/565,774.02
  6. Step 6: Final answer
    x = 429,396.93

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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.