Home / 385,821.64-578,032.62-284,869.72

Finding the Fourth Proportional to 385,821.64, 578,032.62 and 284,869.72

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Solution

The fourth proportional to 385,821.64, 578,032.62 and 284,869.72 is: 426,787.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    385,821.64 : 578,032.62 = 284,869.72 : x
  2. Step 2: Convert to fraction form
    385,821.64/578,032.62 = 284,869.72/x
  3. Step 3: Cross multiply
    385,821.64x = 578,032.62 × 284,869.72
  4. Step 4: Simplify right side
    385,821.64x = 164,663,990,610.27
  5. Step 5: Solve for x
    x = 164,663,990,610.27/385,821.64
  6. Step 6: Final answer
    x = 426,787.86

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1.5x scale

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.