Home / 1,418,980.16-2,128,820.16-421,708.16

Finding the Fourth Proportional to 1,418,980.16, 2,128,820.16 and 421,708.16

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Solution

The fourth proportional to 1,418,980.16, 2,128,820.16 and 421,708.16 is: 632,666.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,418,980.16 : 2,128,820.16 = 421,708.16 : x
  2. Step 2: Convert to fraction form
    1,418,980.16/2,128,820.16 = 421,708.16/x
  3. Step 3: Cross multiply
    1,418,980.16x = 2,128,820.16 × 421,708.16
  4. Step 4: Simplify right side
    1,418,980.16x = 897,740,832,644.51
  5. Step 5: Solve for x
    x = 897,740,832,644.51/1,418,980.16
  6. Step 6: Final answer
    x = 632,666.23

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.