Home / 813,090.30-1,220,752.62-413,999.24

Finding the Fourth Proportional to 813,090.30, 1,220,752.62 and 413,999.24

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Solution

The fourth proportional to 813,090.30, 1,220,752.62 and 413,999.24 is: 621,567.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    813,090.30 : 1,220,752.62 = 413,999.24 : x
  2. Step 2: Convert to fraction form
    813,090.30/1,220,752.62 = 413,999.24/x
  3. Step 3: Cross multiply
    813,090.30x = 1,220,752.62 × 413,999.24
  4. Step 4: Simplify right side
    813,090.30x = 505,390,656,908.01
  5. Step 5: Solve for x
    x = 505,390,656,908.01/813,090.30
  6. Step 6: Final answer
    x = 621,567.69

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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.