Home / 489,917,076.40-734,119,787.40-424,915,937.20

Finding the Fourth Proportional to 489,917,076.40, 734,119,787.40 and 424,915,937.20

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Solution

The fourth proportional to 489,917,076.40, 734,119,787.40 and 424,915,937.20 is: 636,718,360.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    489,917,076.40 : 734,119,787.40 = 424,915,937.20 : x
  2. Step 2: Convert to fraction form
    489,917,076.40/734,119,787.40 = 424,915,937.20/x
  3. Step 3: Cross multiply
    489,917,076.40x = 734,119,787.40 × 424,915,937.20
  4. Step 4: Simplify right side
    489,917,076.40x = 311,939,197,480,135,744
  5. Step 5: Solve for x
    x = 311,939,197,480,135,744/489,917,076.40
  6. Step 6: Final answer
    x = 636,718,360.12

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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.