Home / 1,221,510.09-1,685,685.90-677,645.90

Finding the Fourth Proportional to 1,221,510.09, 1,685,685.90 and 677,645.90

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Solution

The fourth proportional to 1,221,510.09, 1,685,685.90 and 677,645.90 is: 935,152.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,221,510.09 : 1,685,685.90 = 677,645.90 : x
  2. Step 2: Convert to fraction form
    1,221,510.09/1,685,685.90 = 677,645.90/x
  3. Step 3: Cross multiply
    1,221,510.09x = 1,685,685.90 × 677,645.90
  4. Step 4: Simplify right side
    1,221,510.09x = 1,142,298,138,822.81
  5. Step 5: Solve for x
    x = 1,142,298,138,822.81/1,221,510.09
  6. Step 6: Final answer
    x = 935,152.44

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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.