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Finding the Fourth Proportional to 489,672,820.40, 732,808,619.40 and 336,617,812.40

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Solution

The fourth proportional to 489,672,820.40, 732,808,619.40 and 336,617,812.40 is: 503,757,660.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    489,672,820.40 : 732,808,619.40 = 336,617,812.40 : x
  2. Step 2: Convert to fraction form
    489,672,820.40/732,808,619.40 = 336,617,812.40/x
  3. Step 3: Cross multiply
    489,672,820.40x = 732,808,619.40 × 336,617,812.40
  4. Step 4: Simplify right side
    489,672,820.40x = 246,676,434,370,292,160
  5. Step 5: Solve for x
    x = 246,676,434,370,292,160/489,672,820.40
  6. Step 6: Final answer
    x = 503,757,660.41

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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.