Home / 1,105,123.49-1,525,158.99-621,659.80

Finding the Fourth Proportional to 1,105,123.49, 1,525,158.99 and 621,659.80

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Solution

The fourth proportional to 1,105,123.49, 1,525,158.99 and 621,659.80 is: 857,940.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,105,123.49 : 1,525,158.99 = 621,659.80 : x
  2. Step 2: Convert to fraction form
    1,105,123.49/1,525,158.99 = 621,659.80/x
  3. Step 3: Cross multiply
    1,105,123.49x = 1,525,158.99 × 621,659.80
  4. Step 4: Simplify right side
    1,105,123.49x = 948,130,032,691.60
  5. Step 5: Solve for x
    x = 948,130,032,691.60/1,105,123.49
  6. Step 6: Final answer
    x = 857,940.35

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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.