Home / 878,613.59-1,212,472.32-491,438.05

Finding the Fourth Proportional to 878,613.59, 1,212,472.32 and 491,438.05

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Solution

The fourth proportional to 878,613.59, 1,212,472.32 and 491,438.05 is: 678,176.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    878,613.59 : 1,212,472.32 = 491,438.05 : x
  2. Step 2: Convert to fraction form
    878,613.59/1,212,472.32 = 491,438.05/x
  3. Step 3: Cross multiply
    878,613.59x = 1,212,472.32 × 491,438.05
  4. Step 4: Simplify right side
    878,613.59x = 595,855,032,619.78
  5. Step 5: Solve for x
    x = 595,855,032,619.78/878,613.59
  6. Step 6: Final answer
    x = 678,176.44

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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.