Home / 820,430.55-1,230,587.51-221,425.83

Finding the Fourth Proportional to 820,430.55, 1,230,587.51 and 221,425.83

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Solution

The fourth proportional to 820,430.55, 1,230,587.51 and 221,425.83 is: 332,123.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    820,430.55 : 1,230,587.51 = 221,425.83 : x
  2. Step 2: Convert to fraction form
    820,430.55/1,230,587.51 = 221,425.83/x
  3. Step 3: Cross multiply
    820,430.55x = 1,230,587.51 × 221,425.83
  4. Step 4: Simplify right side
    820,430.55x = 272,483,859,682.25
  5. Step 5: Solve for x
    x = 272,483,859,682.25/820,430.55
  6. Step 6: Final answer
    x = 332,123.01

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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.