Home / 379,044,778.28-523,108,861.83-209,495,368.61

Finding the Fourth Proportional to 379,044,778.28, 523,108,861.83 and 209,495,368.61

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Solution

The fourth proportional to 379,044,778.28, 523,108,861.83 and 209,495,368.61 is: 289,118,568.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    379,044,778.28 : 523,108,861.83 = 209,495,368.61 : x
  2. Step 2: Convert to fraction form
    379,044,778.28/523,108,861.83 = 209,495,368.61/x
  3. Step 3: Cross multiply
    379,044,778.28x = 523,108,861.83 × 209,495,368.61
  4. Step 4: Simplify right side
    379,044,778.28x = 109,588,883,831,574,288
  5. Step 5: Solve for x
    x = 109,588,883,831,574,288/379,044,778.28
  6. Step 6: Final answer
    x = 289,118,568.87

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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.