Home / 720,739.40-1,081,109.10-346,800.20

Finding the Fourth Proportional to 720,739.40, 1,081,109.10 and 346,800.20

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Solution

The fourth proportional to 720,739.40, 1,081,109.10 and 346,800.20 is: 520,200.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    720,739.40 : 1,081,109.10 = 346,800.20 : x
  2. Step 2: Convert to fraction form
    720,739.40/1,081,109.10 = 346,800.20/x
  3. Step 3: Cross multiply
    720,739.40x = 1,081,109.10 × 346,800.20
  4. Step 4: Simplify right side
    720,739.40x = 374,928,852,101.82
  5. Step 5: Solve for x
    x = 374,928,852,101.82/720,739.40
  6. Step 6: Final answer
    x = 520,200.30

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Similar ratio
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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.