Home / 810,419.60-1,213,879.80-526,984.40

Finding the Fourth Proportional to 810,419.60, 1,213,879.80 and 526,984.40

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Solution

The fourth proportional to 810,419.60, 1,213,879.80 and 526,984.40 is: 789,338.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    810,419.60 : 1,213,879.80 = 526,984.40 : x
  2. Step 2: Convert to fraction form
    810,419.60/1,213,879.80 = 526,984.40/x
  3. Step 3: Cross multiply
    810,419.60x = 1,213,879.80 × 526,984.40
  4. Step 4: Simplify right side
    810,419.60x = 639,695,718,075.12
  5. Step 5: Solve for x
    x = 639,695,718,075.12/810,419.60
  6. Step 6: Final answer
    x = 789,338.90

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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.