Home / 1,218,728.16-1,681,824.20-674,852.31

Finding the Fourth Proportional to 1,218,728.16, 1,681,824.20 and 674,852.31

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Solution

The fourth proportional to 1,218,728.16, 1,681,824.20 and 674,852.31 is: 931,284.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,218,728.16 : 1,681,824.20 = 674,852.31 : x
  2. Step 2: Convert to fraction form
    1,218,728.16/1,681,824.20 = 674,852.31/x
  3. Step 3: Cross multiply
    1,218,728.16x = 1,681,824.20 × 674,852.31
  4. Step 4: Simplify right side
    1,218,728.16x = 1,134,982,943,009.64
  5. Step 5: Solve for x
    x = 1,134,982,943,009.64/1,218,728.16
  6. Step 6: Final answer
    x = 931,284.74

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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.