Home / 1,186,495.25-1,780,370.40-647,140.91

Finding the Fourth Proportional to 1,186,495.25, 1,780,370.40 and 647,140.91

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Solution

The fourth proportional to 1,186,495.25, 1,780,370.40 and 647,140.91 is: 971,053.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,186,495.25 : 1,780,370.40 = 647,140.91 : x
  2. Step 2: Convert to fraction form
    1,186,495.25/1,780,370.40 = 647,140.91/x
  3. Step 3: Cross multiply
    1,186,495.25x = 1,780,370.40 × 647,140.91
  4. Step 4: Simplify right side
    1,186,495.25x = 1,152,150,520,793.06
  5. Step 5: Solve for x
    x = 1,152,150,520,793.06/1,186,495.25
  6. Step 6: Final answer
    x = 971,053.63

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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.