Home / 1,240,859.73-1,712,120.80-724,379.21

Finding the Fourth Proportional to 1,240,859.73, 1,712,120.80 and 724,379.21

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Solution

The fourth proportional to 1,240,859.73, 1,712,120.80 and 724,379.21 is: 999,488.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,240,859.73 : 1,712,120.80 = 724,379.21 : x
  2. Step 2: Convert to fraction form
    1,240,859.73/1,712,120.80 = 724,379.21/x
  3. Step 3: Cross multiply
    1,240,859.73x = 1,712,120.80 × 724,379.21
  4. Step 4: Simplify right side
    1,240,859.73x = 1,240,224,712,528.57
  5. Step 5: Solve for x
    x = 1,240,224,712,528.57/1,240,859.73
  6. Step 6: Final answer
    x = 999,488.24

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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.