Home / 1,311,753,911.14-1,967,630,866.85-438,355,279.47

Finding the Fourth Proportional to 1,311,753,911.14, 1,967,630,866.85 and 438,355,279.47

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Solution

The fourth proportional to 1,311,753,911.14, 1,967,630,866.85 and 438,355,279.47 is: 657,532,919.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,311,753,911.14 : 1,967,630,866.85 = 438,355,279.47 : x
  2. Step 2: Convert to fraction form
    1,311,753,911.14/1,967,630,866.85 = 438,355,279.47/x
  3. Step 3: Cross multiply
    1,311,753,911.14x = 1,967,630,866.85 × 438,355,279.47
  4. Step 4: Simplify right side
    1,311,753,911.14x = 862,521,378,531,830,144
  5. Step 5: Solve for x
    x = 862,521,378,531,830,144/1,311,753,911.14
  6. Step 6: Final answer
    x = 657,532,919.25

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Double scale
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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.