Home / 782,551.49-1,080,934.08-647,132.45

Finding the Fourth Proportional to 782,551.49, 1,080,934.08 and 647,132.45

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Solution

The fourth proportional to 782,551.49, 1,080,934.08 and 647,132.45 is: 893,880.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    782,551.49 : 1,080,934.08 = 647,132.45 : x
  2. Step 2: Convert to fraction form
    782,551.49/1,080,934.08 = 647,132.45/x
  3. Step 3: Cross multiply
    782,551.49x = 1,080,934.08 × 647,132.45
  4. Step 4: Simplify right side
    782,551.49x = 699,507,520,563.40
  5. Step 5: Solve for x
    x = 699,507,520,563.40/782,551.49
  6. Step 6: Final answer
    x = 893,880.50

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.