Home / 521,631,327.72-719,867,431.80-286,677,718.68

Finding the Fourth Proportional to 521,631,327.72, 719,867,431.80 and 286,677,718.68

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Solution

The fourth proportional to 521,631,327.72, 719,867,431.80 and 286,677,718.68 is: 395,624,154.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    521,631,327.72 : 719,867,431.80 = 286,677,718.68 : x
  2. Step 2: Convert to fraction form
    521,631,327.72/719,867,431.80 = 286,677,718.68/x
  3. Step 3: Cross multiply
    521,631,327.72x = 719,867,431.80 × 286,677,718.68
  4. Step 4: Simplify right side
    521,631,327.72x = 206,369,953,100,454,464
  5. Step 5: Solve for x
    x = 206,369,953,100,454,464/521,631,327.72
  6. Step 6: Final answer
    x = 395,624,154.71

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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.