Home / 489,915,009.20-734,872,513.80-478,577,601.20

Finding the Fourth Proportional to 489,915,009.20, 734,872,513.80 and 478,577,601.20

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Solution

The fourth proportional to 489,915,009.20, 734,872,513.80 and 478,577,601.20 is: 717,866,401.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    489,915,009.20 : 734,872,513.80 = 478,577,601.20 : x
  2. Step 2: Convert to fraction form
    489,915,009.20/734,872,513.80 = 478,577,601.20/x
  3. Step 3: Cross multiply
    489,915,009.20x = 734,872,513.80 × 478,577,601.20
  4. Step 4: Simplify right side
    489,915,009.20x = 351,693,524,842,217,856
  5. Step 5: Solve for x
    x = 351,693,524,842,217,856/489,915,009.20
  6. Step 6: Final answer
    x = 717,866,401.80

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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.