Home / 719,820.40-1,080,384.94-383,142.68

Finding the Fourth Proportional to 719,820.40, 1,080,384.94 and 383,142.68

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Solution

The fourth proportional to 719,820.40, 1,080,384.94 and 383,142.68 is: 575,062.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    719,820.40 : 1,080,384.94 = 383,142.68 : x
  2. Step 2: Convert to fraction form
    719,820.40/1,080,384.94 = 383,142.68/x
  3. Step 3: Cross multiply
    719,820.40x = 1,080,384.94 × 383,142.68
  4. Step 4: Simplify right side
    719,820.40x = 413,941,581,343.24
  5. Step 5: Solve for x
    x = 413,941,581,343.24/719,820.40
  6. Step 6: Final answer
    x = 575,062.31

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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.