Home / 1,218,122.58-1,680,622.71-708,726.54

Finding the Fourth Proportional to 1,218,122.58, 1,680,622.71 and 708,726.54

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Solution

The fourth proportional to 1,218,122.58, 1,680,622.71 and 708,726.54 is: 977,817.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,218,122.58 : 1,680,622.71 = 708,726.54 : x
  2. Step 2: Convert to fraction form
    1,218,122.58/1,680,622.71 = 708,726.54/x
  3. Step 3: Cross multiply
    1,218,122.58x = 1,680,622.71 × 708,726.54
  4. Step 4: Simplify right side
    1,218,122.58x = 1,191,101,918,303.72
  5. Step 5: Solve for x
    x = 1,191,101,918,303.72/1,218,122.58
  6. Step 6: Final answer
    x = 977,817.78

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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.