Home / 855,108.30-1,281,816.45-405,038.10

Finding the Fourth Proportional to 855,108.30, 1,281,816.45 and 405,038.10

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Solution

The fourth proportional to 855,108.30, 1,281,816.45 and 405,038.10 is: 607,156.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    855,108.30 : 1,281,816.45 = 405,038.10 : x
  2. Step 2: Convert to fraction form
    855,108.30/1,281,816.45 = 405,038.10/x
  3. Step 3: Cross multiply
    855,108.30x = 1,281,816.45 × 405,038.10
  4. Step 4: Simplify right side
    855,108.30x = 519,184,499,456.75
  5. Step 5: Solve for x
    x = 519,184,499,456.75/855,108.30
  6. Step 6: Final answer
    x = 607,156.43

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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.