Home / 816,000.45-1,125,611.26-509,544.78

Finding the Fourth Proportional to 816,000.45, 1,125,611.26 and 509,544.78

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Solution

The fourth proportional to 816,000.45, 1,125,611.26 and 509,544.78 is: 702,878.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    816,000.45 : 1,125,611.26 = 509,544.78 : x
  2. Step 2: Convert to fraction form
    816,000.45/1,125,611.26 = 509,544.78/x
  3. Step 3: Cross multiply
    816,000.45x = 1,125,611.26 × 509,544.78
  4. Step 4: Simplify right side
    816,000.45x = 573,549,341,842.22
  5. Step 5: Solve for x
    x = 573,549,341,842.22/816,000.45
  6. Step 6: Final answer
    x = 702,878.71

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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.