Home / 719,821.40-1,080,386.44-383,143.68

Finding the Fourth Proportional to 719,821.40, 1,080,386.44 and 383,143.68

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Solution

The fourth proportional to 719,821.40, 1,080,386.44 and 383,143.68 is: 575,063.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    719,821.40 : 1,080,386.44 = 383,143.68 : x
  2. Step 2: Convert to fraction form
    719,821.40/1,080,386.44 = 383,143.68/x
  3. Step 3: Cross multiply
    719,821.40x = 1,080,386.44 × 383,143.68
  4. Step 4: Simplify right side
    719,821.40x = 413,943,236,443.70
  5. Step 5: Solve for x
    x = 413,943,236,443.70/719,821.40
  6. Step 6: Final answer
    x = 575,063.81

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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.