Home / 1,269,289,919.40-1,903,934,879.10-724,086,565.80

Finding the Fourth Proportional to 1,269,289,919.40, 1,903,934,879.10 and 724,086,565.80

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Solution

The fourth proportional to 1,269,289,919.40, 1,903,934,879.10 and 724,086,565.80 is: 1,086,129,848.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,269,289,919.40 : 1,903,934,879.10 = 724,086,565.80 : x
  2. Step 2: Convert to fraction form
    1,269,289,919.40/1,903,934,879.10 = 724,086,565.80/x
  3. Step 3: Cross multiply
    1,269,289,919.40x = 1,903,934,879.10 × 724,086,565.80
  4. Step 4: Simplify right side
    1,269,289,919.40x = 1,378,613,668,114,356,992
  5. Step 5: Solve for x
    x = 1,378,613,668,114,356,992/1,269,289,919.40
  6. Step 6: Final answer
    x = 1,086,129,848.70

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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.