Home / 1,187,011.52-1,637,171.74-1,021,720.88

Finding the Fourth Proportional to 1,187,011.52, 1,637,171.74 and 1,021,720.88

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Solution

The fourth proportional to 1,187,011.52, 1,637,171.74 and 1,021,720.88 is: 1,409,196.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,187,011.52 : 1,637,171.74 = 1,021,720.88 : x
  2. Step 2: Convert to fraction form
    1,187,011.52/1,637,171.74 = 1,021,720.88/x
  3. Step 3: Cross multiply
    1,187,011.52x = 1,637,171.74 × 1,021,720.88
  4. Step 4: Simplify right side
    1,187,011.52x = 1,672,732,550,903.93
  5. Step 5: Solve for x
    x = 1,672,732,550,903.93/1,187,011.52
  6. Step 6: Final answer
    x = 1,409,196.56

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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.