Home / 719,823.40-1,080,389.44-383,145.68

Finding the Fourth Proportional to 719,823.40, 1,080,389.44 and 383,145.68

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Solution

The fourth proportional to 719,823.40, 1,080,389.44 and 383,145.68 is: 575,066.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    719,823.40 : 1,080,389.44 = 383,145.68 : x
  2. Step 2: Convert to fraction form
    719,823.40/1,080,389.44 = 383,145.68/x
  3. Step 3: Cross multiply
    719,823.40x = 1,080,389.44 × 383,145.68
  4. Step 4: Simplify right side
    719,823.40x = 413,946,546,653.62
  5. Step 5: Solve for x
    x = 413,946,546,653.62/719,823.40
  6. Step 6: Final answer
    x = 575,066.81

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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.