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Finding the Fourth Proportional to 720,998.10, 1,081,403.16 and 188,560.20

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Solution

The fourth proportional to 720,998.10, 1,081,403.16 and 188,560.20 is: 282,815.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    720,998.10 : 1,081,403.16 = 188,560.20 : x
  2. Step 2: Convert to fraction form
    720,998.10/1,081,403.16 = 188,560.20/x
  3. Step 3: Cross multiply
    720,998.10x = 1,081,403.16 × 188,560.20
  4. Step 4: Simplify right side
    720,998.10x = 203,909,596,130.23
  5. Step 5: Solve for x
    x = 203,909,596,130.23/720,998.10
  6. Step 6: Final answer
    x = 282,815.72

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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.