Home / 786,493,009.72-1,179,607,982.82-288,400,597.12

Finding the Fourth Proportional to 786,493,009.72, 1,179,607,982.82 and 288,400,597.12

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Solution

The fourth proportional to 786,493,009.72, 1,179,607,982.82 and 288,400,597.12 is: 432,552,664.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    786,493,009.72 : 1,179,607,982.82 = 288,400,597.12 : x
  2. Step 2: Convert to fraction form
    786,493,009.72/1,179,607,982.82 = 288,400,597.12/x
  3. Step 3: Cross multiply
    786,493,009.72x = 1,179,607,982.82 × 288,400,597.12
  4. Step 4: Simplify right side
    786,493,009.72x = 340,199,646,612,806,656
  5. Step 5: Solve for x
    x = 340,199,646,612,806,656/786,493,009.72
  6. Step 6: Final answer
    x = 432,552,664.05

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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.