Home / 1,687,089.34-2,328,180.78-912,717.64

Finding the Fourth Proportional to 1,687,089.34, 2,328,180.78 and 912,717.64

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Solution

The fourth proportional to 1,687,089.34, 2,328,180.78 and 912,717.64 is: 1,259,548.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,687,089.34 : 2,328,180.78 = 912,717.64 : x
  2. Step 2: Convert to fraction form
    1,687,089.34/2,328,180.78 = 912,717.64/x
  3. Step 3: Cross multiply
    1,687,089.34x = 2,328,180.78 × 912,717.64
  4. Step 4: Simplify right side
    1,687,089.34x = 2,124,971,667,014.96
  5. Step 5: Solve for x
    x = 2,124,971,667,014.96/1,687,089.34
  6. Step 6: Final answer
    x = 1,259,548.99

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.