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Finding the Fourth Proportional to 489,945,207.60, 734,917,811.40 and 404,914,647.60

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Solution

The fourth proportional to 489,945,207.60, 734,917,811.40 and 404,914,647.60 is: 607,371,971.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    489,945,207.60 : 734,917,811.40 = 404,914,647.60 : x
  2. Step 2: Convert to fraction form
    489,945,207.60/734,917,811.40 = 404,914,647.60/x
  3. Step 3: Cross multiply
    489,945,207.60x = 734,917,811.40 × 404,914,647.60
  4. Step 4: Simplify right side
    489,945,207.60x = 297,578,986,617,994,240
  5. Step 5: Solve for x
    x = 297,578,986,617,994,240/489,945,207.60
  6. Step 6: Final answer
    x = 607,371,971.40

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Double scale
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1.5x scale

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.