Home / 1,238,976,074.40-1,858,464,111.60-868,116,861.60

Finding the Fourth Proportional to 1,238,976,074.40, 1,858,464,111.60 and 868,116,861.60

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Solution

The fourth proportional to 1,238,976,074.40, 1,858,464,111.60 and 868,116,861.60 is: 1,302,175,292.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,238,976,074.40 : 1,858,464,111.60 = 868,116,861.60 : x
  2. Step 2: Convert to fraction form
    1,238,976,074.40/1,858,464,111.60 = 868,116,861.60/x
  3. Step 3: Cross multiply
    1,238,976,074.40x = 1,858,464,111.60 × 868,116,861.60
  4. Step 4: Simplify right side
    1,238,976,074.40x = 1,613,364,031,958,424,064
  5. Step 5: Solve for x
    x = 1,613,364,031,958,424,064/1,238,976,074.40
  6. Step 6: Final answer
    x = 1,302,175,292.40

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Double scale
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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.