Home / 1,216,685,857.32-1,679,096,851.44-680,832,845.20

Finding the Fourth Proportional to 1,216,685,857.32, 1,679,096,851.44 and 680,832,845.20

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Solution

The fourth proportional to 1,216,685,857.32, 1,679,096,851.44 and 680,832,845.20 is: 939,588,703.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,216,685,857.32 : 1,679,096,851.44 = 680,832,845.20 : x
  2. Step 2: Convert to fraction form
    1,216,685,857.32/1,679,096,851.44 = 680,832,845.20/x
  3. Step 3: Cross multiply
    1,216,685,857.32x = 1,679,096,851.44 × 680,832,845.20
  4. Step 4: Simplify right side
    1,216,685,857.32x = 1,143,184,286,732,257,024
  5. Step 5: Solve for x
    x = 1,143,184,286,732,257,024/1,216,685,857.32
  6. Step 6: Final answer
    x = 939,588,703.08

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Double scale
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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.