Home / 869,087.89-1,304,005.52-420,146.34

Finding the Fourth Proportional to 869,087.89, 1,304,005.52 and 420,146.34

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Solution

The fourth proportional to 869,087.89, 1,304,005.52 and 420,146.34 is: 630,400.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    869,087.89 : 1,304,005.52 = 420,146.34 : x
  2. Step 2: Convert to fraction form
    869,087.89/1,304,005.52 = 420,146.34/x
  3. Step 3: Cross multiply
    869,087.89x = 1,304,005.52 × 420,146.34
  4. Step 4: Simplify right side
    869,087.89x = 547,873,146,567.80
  5. Step 5: Solve for x
    x = 547,873,146,567.80/869,087.89
  6. Step 6: Final answer
    x = 630,400.16

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1.5x scale

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.