Home / 1,296,098,691.21-1,788,423,790.05-787,196,581.52

Finding the Fourth Proportional to 1,296,098,691.21, 1,788,423,790.05 and 787,196,581.52

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Solution

The fourth proportional to 1,296,098,691.21, 1,788,423,790.05 and 787,196,581.52 is: 1,086,214,424.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,296,098,691.21 : 1,788,423,790.05 = 787,196,581.52 : x
  2. Step 2: Convert to fraction form
    1,296,098,691.21/1,788,423,790.05 = 787,196,581.52/x
  3. Step 3: Cross multiply
    1,296,098,691.21x = 1,788,423,790.05 × 787,196,581.52
  4. Step 4: Simplify right side
    1,296,098,691.21x = 1,407,841,093,827,460,096
  5. Step 5: Solve for x
    x = 1,407,841,093,827,460,096/1,296,098,691.21
  6. Step 6: Final answer
    x = 1,086,214,424.39

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Double scale
Find fourth proportional to 1,296,098,692.21, 1,788,423,791.43 and 787,196,582.52
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.