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Finding the Fourth Proportional to 582,550.74, 803,505.90 and 388,860.78

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Solution

The fourth proportional to 582,550.74, 803,505.90 and 388,860.78 is: 536,351.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    582,550.74 : 803,505.90 = 388,860.78 : x
  2. Step 2: Convert to fraction form
    582,550.74/803,505.90 = 388,860.78/x
  3. Step 3: Cross multiply
    582,550.74x = 803,505.90 × 388,860.78
  4. Step 4: Simplify right side
    582,550.74x = 312,451,931,008.60
  5. Step 5: Solve for x
    x = 312,451,931,008.60/582,550.74
  6. Step 6: Final answer
    x = 536,351.44

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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.