Home / 1,189,931.40-1,782,272.70-715,789.80

Finding the Fourth Proportional to 1,189,931.40, 1,782,272.70 and 715,789.80

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Solution

The fourth proportional to 1,189,931.40, 1,782,272.70 and 715,789.80 is: 1,072,106.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,189,931.40 : 1,782,272.70 = 715,789.80 : x
  2. Step 2: Convert to fraction form
    1,189,931.40/1,782,272.70 = 715,789.80/x
  3. Step 3: Cross multiply
    1,189,931.40x = 1,782,272.70 × 715,789.80
  4. Step 4: Simplify right side
    1,189,931.40x = 1,275,732,619,478.46
  5. Step 5: Solve for x
    x = 1,275,732,619,478.46/1,189,931.40
  6. Step 6: Final answer
    x = 1,072,106.02

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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.