Home / 642,135.30-886,742.37-480,710.10

Finding the Fourth Proportional to 642,135.30, 886,742.37 and 480,710.10

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Solution

The fourth proportional to 642,135.30, 886,742.37 and 480,710.10 is: 663,825.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    642,135.30 : 886,742.37 = 480,710.10 : x
  2. Step 2: Convert to fraction form
    642,135.30/886,742.37 = 480,710.10/x
  3. Step 3: Cross multiply
    642,135.30x = 886,742.37 × 480,710.10
  4. Step 4: Simplify right side
    642,135.30x = 426,266,013,356.94
  5. Step 5: Solve for x
    x = 426,266,013,356.94/642,135.30
  6. Step 6: Final answer
    x = 663,825.85

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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.