Home / 681,426,007.20-1,022,139,010.80-436,537,994.40

Finding the Fourth Proportional to 681,426,007.20, 1,022,139,010.80 and 436,537,994.40

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Solution

The fourth proportional to 681,426,007.20, 1,022,139,010.80 and 436,537,994.40 is: 654,806,991.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    681,426,007.20 : 1,022,139,010.80 = 436,537,994.40 : x
  2. Step 2: Convert to fraction form
    681,426,007.20/1,022,139,010.80 = 436,537,994.40/x
  3. Step 3: Cross multiply
    681,426,007.20x = 1,022,139,010.80 × 436,537,994.40
  4. Step 4: Simplify right side
    681,426,007.20x = 446,202,513,772,631,872
  5. Step 5: Solve for x
    x = 446,202,513,772,631,872/681,426,007.20
  6. Step 6: Final answer
    x = 654,806,991.60

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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.