Home / 1,228,406.72-1,842,776.40-429,500.48

Finding the Fourth Proportional to 1,228,406.72, 1,842,776.40 and 429,500.48

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Solution

The fourth proportional to 1,228,406.72, 1,842,776.40 and 429,500.48 is: 644,308.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,228,406.72 : 1,842,776.40 = 429,500.48 : x
  2. Step 2: Convert to fraction form
    1,228,406.72/1,842,776.40 = 429,500.48/x
  3. Step 3: Cross multiply
    1,228,406.72x = 1,842,776.40 × 429,500.48
  4. Step 4: Simplify right side
    1,228,406.72x = 791,473,348,332.67
  5. Step 5: Solve for x
    x = 791,473,348,332.67/1,228,406.72
  6. Step 6: Final answer
    x = 644,308.87

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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.