Home / 643,324.20-964,986.30-578,005.80

Finding the Fourth Proportional to 643,324.20, 964,986.30 and 578,005.80

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Solution

The fourth proportional to 643,324.20, 964,986.30 and 578,005.80 is: 867,008.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    643,324.20 : 964,986.30 = 578,005.80 : x
  2. Step 2: Convert to fraction form
    643,324.20/964,986.30 = 578,005.80/x
  3. Step 3: Cross multiply
    643,324.20x = 964,986.30 × 578,005.80
  4. Step 4: Simplify right side
    643,324.20x = 557,767,678,320.54
  5. Step 5: Solve for x
    x = 557,767,678,320.54/643,324.20
  6. Step 6: Final answer
    x = 867,008.70

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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.