Home / 1,221,066.89-1,829,578.56-421,904.28

Finding the Fourth Proportional to 1,221,066.89, 1,829,578.56 and 421,904.28

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Solution

The fourth proportional to 1,221,066.89, 1,829,578.56 and 421,904.28 is: 632,157.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,221,066.89 : 1,829,578.56 = 421,904.28 : x
  2. Step 2: Convert to fraction form
    1,221,066.89/1,829,578.56 = 421,904.28/x
  3. Step 3: Cross multiply
    1,221,066.89x = 1,829,578.56 × 421,904.28
  4. Step 4: Simplify right side
    1,221,066.89x = 771,907,025,060.24
  5. Step 5: Solve for x
    x = 771,907,025,060.24/1,221,066.89
  6. Step 6: Final answer
    x = 632,157.86

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Why These Related Problems?

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