Home / 509,398,280.35-702,965,401.13-286,380,956.09

Finding the Fourth Proportional to 509,398,280.35, 702,965,401.13 and 286,380,956.09

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Solution

The fourth proportional to 509,398,280.35, 702,965,401.13 and 286,380,956.09 is: 395,203,343.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    509,398,280.35 : 702,965,401.13 = 286,380,956.09 : x
  2. Step 2: Convert to fraction form
    509,398,280.35/702,965,401.13 = 286,380,956.09/x
  3. Step 3: Cross multiply
    509,398,280.35x = 702,965,401.13 × 286,380,956.09
  4. Step 4: Simplify right side
    509,398,280.35x = 201,315,903,676,273,120
  5. Step 5: Solve for x
    x = 201,315,903,676,273,120/509,398,280.35
  6. Step 6: Final answer
    x = 395,203,343.72

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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.