Home / 1,390,772.84-2,085,831.95-379,654.43

Finding the Fourth Proportional to 1,390,772.84, 2,085,831.95 and 379,654.43

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Solution

The fourth proportional to 1,390,772.84, 2,085,831.95 and 379,654.43 is: 569,392.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,390,772.84 : 2,085,831.95 = 379,654.43 : x
  2. Step 2: Convert to fraction form
    1,390,772.84/2,085,831.95 = 379,654.43/x
  3. Step 3: Cross multiply
    1,390,772.84x = 2,085,831.95 × 379,654.43
  4. Step 4: Simplify right side
    1,390,772.84x = 791,895,327,725.61
  5. Step 5: Solve for x
    x = 791,895,327,725.61/1,390,772.84
  6. Step 6: Final answer
    x = 569,392.29

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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.