Home / 1,228,276.80-1,842,415.20-429,292.80

Finding the Fourth Proportional to 1,228,276.80, 1,842,415.20 and 429,292.80

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Solution

The fourth proportional to 1,228,276.80, 1,842,415.20 and 429,292.80 is: 643,939.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,228,276.80 : 1,842,415.20 = 429,292.80 : x
  2. Step 2: Convert to fraction form
    1,228,276.80/1,842,415.20 = 429,292.80/x
  3. Step 3: Cross multiply
    1,228,276.80x = 1,842,415.20 × 429,292.80
  4. Step 4: Simplify right side
    1,228,276.80x = 790,935,579,970.56
  5. Step 5: Solve for x
    x = 790,935,579,970.56/1,228,276.80
  6. Step 6: Final answer
    x = 643,939.20

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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.