Home / 1,298,865,178.32-1,792,567,541.99-790,263,998.66

Finding the Fourth Proportional to 1,298,865,178.32, 1,792,567,541.99 and 790,263,998.66

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Solution

The fourth proportional to 1,298,865,178.32, 1,792,567,541.99 and 790,263,998.66 is: 1,090,645,601.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,298,865,178.32 : 1,792,567,541.99 = 790,263,998.66 : x
  2. Step 2: Convert to fraction form
    1,298,865,178.32/1,792,567,541.99 = 790,263,998.66/x
  3. Step 3: Cross multiply
    1,298,865,178.32x = 1,792,567,541.99 × 790,263,998.66
  4. Step 4: Simplify right side
    1,298,865,178.32x = 1,416,601,593,588,230,656
  5. Step 5: Solve for x
    x = 1,416,601,593,588,230,656/1,298,865,178.32
  6. Step 6: Final answer
    x = 1,090,645,601.43

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.