Home / 698,625,837.20-1,047,938,755.80-426,528,045.20

Finding the Fourth Proportional to 698,625,837.20, 1,047,938,755.80 and 426,528,045.20

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Solution

The fourth proportional to 698,625,837.20, 1,047,938,755.80 and 426,528,045.20 is: 639,792,067.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    698,625,837.20 : 1,047,938,755.80 = 426,528,045.20 : x
  2. Step 2: Convert to fraction form
    698,625,837.20/1,047,938,755.80 = 426,528,045.20/x
  3. Step 3: Cross multiply
    698,625,837.20x = 1,047,938,755.80 × 426,528,045.20
  4. Step 4: Simplify right side
    698,625,837.20x = 446,975,269,000,694,144
  5. Step 5: Solve for x
    x = 446,975,269,000,694,144/698,625,837.20
  6. Step 6: Final answer
    x = 639,792,067.80

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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.