Home / 638,521.02-881,312.55-383,823

Finding the Fourth Proportional to 638,521.02, 881,312.55 and 383,823

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Solution

The fourth proportional to 638,521.02, 881,312.55 and 383,823 is: 529,768.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,521.02 : 881,312.55 = 383,823 : x
  2. Step 2: Convert to fraction form
    638,521.02/881,312.55 = 383,823/x
  3. Step 3: Cross multiply
    638,521.02x = 881,312.55 × 383,823
  4. Step 4: Simplify right side
    638,521.02x = 338,268,026,878.65
  5. Step 5: Solve for x
    x = 338,268,026,878.65/638,521.02
  6. Step 6: Final answer
    x = 529,768.04

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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.