Home / 878,045.40-1,317,068.10-213,197.40

Finding the Fourth Proportional to 878,045.40, 1,317,068.10 and 213,197.40

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Solution

The fourth proportional to 878,045.40, 1,317,068.10 and 213,197.40 is: 319,796.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    878,045.40 : 1,317,068.10 = 213,197.40 : x
  2. Step 2: Convert to fraction form
    878,045.40/1,317,068.10 = 213,197.40/x
  3. Step 3: Cross multiply
    878,045.40x = 1,317,068.10 × 213,197.40
  4. Step 4: Simplify right side
    878,045.40x = 280,795,494,542.94
  5. Step 5: Solve for x
    x = 280,795,494,542.94/878,045.40
  6. Step 6: Final answer
    x = 319,796.10

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Double scale
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Similar ratio
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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.