Home / 1,228,473.12-1,842,972.12-429,780.72

Finding the Fourth Proportional to 1,228,473.12, 1,842,972.12 and 429,780.72

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Solution

The fourth proportional to 1,228,473.12, 1,842,972.12 and 429,780.72 is: 644,762.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,228,473.12 : 1,842,972.12 = 429,780.72 : x
  2. Step 2: Convert to fraction form
    1,228,473.12/1,842,972.12 = 429,780.72/x
  3. Step 3: Cross multiply
    1,228,473.12x = 1,842,972.12 × 429,780.72
  4. Step 4: Simplify right side
    1,228,473.12x = 792,073,884,673.53
  5. Step 5: Solve for x
    x = 792,073,884,673.53/1,228,473.12
  6. Step 6: Final answer
    x = 644,762.89

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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.