Home / 1,272,478.01-1,908,667.20-431,029.76

Finding the Fourth Proportional to 1,272,478.01, 1,908,667.20 and 431,029.76

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Solution

The fourth proportional to 1,272,478.01, 1,908,667.20 and 431,029.76 is: 646,527.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,272,478.01 : 1,908,667.20 = 431,029.76 : x
  2. Step 2: Convert to fraction form
    1,272,478.01/1,908,667.20 = 431,029.76/x
  3. Step 3: Cross multiply
    1,272,478.01x = 1,908,667.20 × 431,029.76
  4. Step 4: Simplify right side
    1,272,478.01x = 822,692,365,135.87
  5. Step 5: Solve for x
    x = 822,692,365,135.87/1,272,478.01
  6. Step 6: Final answer
    x = 646,527.77

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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.