Home / 379,769.28-569,155.68-279,459.84

Finding the Fourth Proportional to 379,769.28, 569,155.68 and 279,459.84

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Solution

The fourth proportional to 379,769.28, 569,155.68 and 279,459.84 is: 418,823.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    379,769.28 : 569,155.68 = 279,459.84 : x
  2. Step 2: Convert to fraction form
    379,769.28/569,155.68 = 279,459.84/x
  3. Step 3: Cross multiply
    379,769.28x = 569,155.68 × 279,459.84
  4. Step 4: Simplify right side
    379,769.28x = 159,056,155,267.89
  5. Step 5: Solve for x
    x = 159,056,155,267.89/379,769.28
  6. Step 6: Final answer
    x = 418,823.12

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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.