Home / 868,946.30-1,303,419.45-307,907.90

Finding the Fourth Proportional to 868,946.30, 1,303,419.45 and 307,907.90

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Solution

The fourth proportional to 868,946.30, 1,303,419.45 and 307,907.90 is: 461,861.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    868,946.30 : 1,303,419.45 = 307,907.90 : x
  2. Step 2: Convert to fraction form
    868,946.30/1,303,419.45 = 307,907.90/x
  3. Step 3: Cross multiply
    868,946.30x = 1,303,419.45 × 307,907.90
  4. Step 4: Simplify right side
    868,946.30x = 401,333,145,668.66
  5. Step 5: Solve for x
    x = 401,333,145,668.66/868,946.30
  6. Step 6: Final answer
    x = 461,861.85

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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.