Home / 1,153,090.20-1,591,267.56-643,810.80

Finding the Fourth Proportional to 1,153,090.20, 1,591,267.56 and 643,810.80

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Solution

The fourth proportional to 1,153,090.20, 1,591,267.56 and 643,810.80 is: 888,460.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,153,090.20 : 1,591,267.56 = 643,810.80 : x
  2. Step 2: Convert to fraction form
    1,153,090.20/1,591,267.56 = 643,810.80/x
  3. Step 3: Cross multiply
    1,153,090.20x = 1,591,267.56 × 643,810.80
  4. Step 4: Simplify right side
    1,153,090.20x = 1,024,475,240,817.65
  5. Step 5: Solve for x
    x = 1,024,475,240,817.65/1,153,090.20
  6. Step 6: Final answer
    x = 888,460.63

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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.