Home / 815,280.30-1,222,920.45-512,162.10

Finding the Fourth Proportional to 815,280.30, 1,222,920.45 and 512,162.10

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Solution

The fourth proportional to 815,280.30, 1,222,920.45 and 512,162.10 is: 768,243.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    815,280.30 : 1,222,920.45 = 512,162.10 : x
  2. Step 2: Convert to fraction form
    815,280.30/1,222,920.45 = 512,162.10/x
  3. Step 3: Cross multiply
    815,280.30x = 1,222,920.45 × 512,162.10
  4. Step 4: Simplify right side
    815,280.30x = 626,333,505,804.95
  5. Step 5: Solve for x
    x = 626,333,505,804.95/815,280.30
  6. Step 6: Final answer
    x = 768,243.15

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.