Home / 709,890.40-1,064,835.60-378,114.40

Finding the Fourth Proportional to 709,890.40, 1,064,835.60 and 378,114.40

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Solution

The fourth proportional to 709,890.40, 1,064,835.60 and 378,114.40 is: 567,171.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    709,890.40 : 1,064,835.60 = 378,114.40 : x
  2. Step 2: Convert to fraction form
    709,890.40/1,064,835.60 = 378,114.40/x
  3. Step 3: Cross multiply
    709,890.40x = 1,064,835.60 × 378,114.40
  4. Step 4: Simplify right side
    709,890.40x = 402,629,673,992.64
  5. Step 5: Solve for x
    x = 402,629,673,992.64/709,890.40
  6. Step 6: Final answer
    x = 567,171.60

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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.