Home / 720,815.32-1,080,173.20-346,400.92

Finding the Fourth Proportional to 720,815.32, 1,080,173.20 and 346,400.92

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Solution

The fourth proportional to 720,815.32, 1,080,173.20 and 346,400.92 is: 519,096.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    720,815.32 : 1,080,173.20 = 346,400.92 : x
  2. Step 2: Convert to fraction form
    720,815.32/1,080,173.20 = 346,400.92/x
  3. Step 3: Cross multiply
    720,815.32x = 1,080,173.20 × 346,400.92
  4. Step 4: Simplify right side
    720,815.32x = 374,172,990,239.34
  5. Step 5: Solve for x
    x = 374,172,990,239.34/720,815.32
  6. Step 6: Final answer
    x = 519,096.89

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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.