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Finding the Fourth Proportional to 872,942,840.01, 1,309,992,585.03 and 479,744,258.67

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Solution

The fourth proportional to 872,942,840.01, 1,309,992,585.03 and 479,744,258.67 is: 719,934,218.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    872,942,840.01 : 1,309,992,585.03 = 479,744,258.67 : x
  2. Step 2: Convert to fraction form
    872,942,840.01/1,309,992,585.03 = 479,744,258.67/x
  3. Step 3: Cross multiply
    872,942,840.01x = 1,309,992,585.03 × 479,744,258.67
  4. Step 4: Simplify right side
    872,942,840.01x = 628,461,421,568,414,336
  5. Step 5: Solve for x
    x = 628,461,421,568,414,336/872,942,840.01
  6. Step 6: Final answer
    x = 719,934,218.79

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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.