Home / 385,821.68-578,032.60-284,869.76

Finding the Fourth Proportional to 385,821.68, 578,032.60 and 284,869.76

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Solution

The fourth proportional to 385,821.68, 578,032.60 and 284,869.76 is: 426,787.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    385,821.68 : 578,032.60 = 284,869.76 : x
  2. Step 2: Convert to fraction form
    385,821.68/578,032.60 = 284,869.76/x
  3. Step 3: Cross multiply
    385,821.68x = 578,032.60 × 284,869.76
  4. Step 4: Simplify right side
    385,821.68x = 164,664,008,034.18
  5. Step 5: Solve for x
    x = 164,664,008,034.18/385,821.68
  6. Step 6: Final answer
    x = 426,787.86

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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.