Home / 1,178,327.80-1,767,491.70-647,486.20

Finding the Fourth Proportional to 1,178,327.80, 1,767,491.70 and 647,486.20

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Solution

The fourth proportional to 1,178,327.80, 1,767,491.70 and 647,486.20 is: 971,229.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,178,327.80 : 1,767,491.70 = 647,486.20 : x
  2. Step 2: Convert to fraction form
    1,178,327.80/1,767,491.70 = 647,486.20/x
  3. Step 3: Cross multiply
    1,178,327.80x = 1,767,491.70 × 647,486.20
  4. Step 4: Simplify right side
    1,178,327.80x = 1,144,426,484,364.54
  5. Step 5: Solve for x
    x = 1,144,426,484,364.54/1,178,327.80
  6. Step 6: Final answer
    x = 971,229.30

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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.