Home / 1,401,071.64-2,101,921.86-428,520.96

Finding the Fourth Proportional to 1,401,071.64, 2,101,921.86 and 428,520.96

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Solution

The fourth proportional to 1,401,071.64, 2,101,921.86 and 428,520.96 is: 642,877.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,401,071.64 : 2,101,921.86 = 428,520.96 : x
  2. Step 2: Convert to fraction form
    1,401,071.64/2,101,921.86 = 428,520.96/x
  3. Step 3: Cross multiply
    1,401,071.64x = 2,101,921.86 × 428,520.96
  4. Step 4: Simplify right side
    1,401,071.64x = 900,717,573,292.19
  5. Step 5: Solve for x
    x = 900,717,573,292.19/1,401,071.64
  6. Step 6: Final answer
    x = 642,877.60

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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.