Home / 1,289,145.90-1,932,406.65-756,392.70

Finding the Fourth Proportional to 1,289,145.90, 1,932,406.65 and 756,392.70

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Solution

The fourth proportional to 1,289,145.90, 1,932,406.65 and 756,392.70 is: 1,133,819.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,289,145.90 : 1,932,406.65 = 756,392.70 : x
  2. Step 2: Convert to fraction form
    1,289,145.90/1,932,406.65 = 756,392.70/x
  3. Step 3: Cross multiply
    1,289,145.90x = 1,932,406.65 × 756,392.70
  4. Step 4: Simplify right side
    1,289,145.90x = 1,461,658,283,491.45
  5. Step 5: Solve for x
    x = 1,461,658,283,491.45/1,289,145.90
  6. Step 6: Final answer
    x = 1,133,819.13

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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.