Home / 1,218,323.67-1,681,220.06-666,932.71

Finding the Fourth Proportional to 1,218,323.67, 1,681,220.06 and 666,932.71

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Solution

The fourth proportional to 1,218,323.67, 1,681,220.06 and 666,932.71 is: 920,330.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,218,323.67 : 1,681,220.06 = 666,932.71 : x
  2. Step 2: Convert to fraction form
    1,218,323.67/1,681,220.06 = 666,932.71/x
  3. Step 3: Cross multiply
    1,218,323.67x = 1,681,220.06 × 666,932.71
  4. Step 4: Simplify right side
    1,218,323.67x = 1,121,260,651,990.02
  5. Step 5: Solve for x
    x = 1,121,260,651,990.02/1,218,323.67
  6. Step 6: Final answer
    x = 920,330.68

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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.