Home / 671,379.64-1,007,069.46-642,224.19

Finding the Fourth Proportional to 671,379.64, 1,007,069.46 and 642,224.19

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Solution

The fourth proportional to 671,379.64, 1,007,069.46 and 642,224.19 is: 963,336.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    671,379.64 : 1,007,069.46 = 642,224.19 : x
  2. Step 2: Convert to fraction form
    671,379.64/1,007,069.46 = 642,224.19/x
  3. Step 3: Cross multiply
    671,379.64x = 1,007,069.46 × 642,224.19
  4. Step 4: Simplify right side
    671,379.64x = 646,764,369,590.41
  5. Step 5: Solve for x
    x = 646,764,369,590.41/671,379.64
  6. Step 6: Final answer
    x = 963,336.29

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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.