Home / 878,975.55-1,213,098.12-491,812.83

Finding the Fourth Proportional to 878,975.55, 1,213,098.12 and 491,812.83

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Solution

The fourth proportional to 878,975.55, 1,213,098.12 and 491,812.83 is: 678,764.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    878,975.55 : 1,213,098.12 = 491,812.83 : x
  2. Step 2: Convert to fraction form
    878,975.55/1,213,098.12 = 491,812.83/x
  3. Step 3: Cross multiply
    878,975.55x = 1,213,098.12 × 491,812.83
  4. Step 4: Simplify right side
    878,975.55x = 596,617,219,464.88
  5. Step 5: Solve for x
    x = 596,617,219,464.88/878,975.55
  6. Step 6: Final answer
    x = 678,764.29

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Double scale
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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.