Home / 898,110,978.15-1,239,379,959.77-501,639,753.68

Finding the Fourth Proportional to 898,110,978.15, 1,239,379,959.77 and 501,639,753.68

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Solution

The fourth proportional to 898,110,978.15, 1,239,379,959.77 and 501,639,753.68 is: 692,255,492.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    898,110,978.15 : 1,239,379,959.77 = 501,639,753.68 : x
  2. Step 2: Convert to fraction form
    898,110,978.15/1,239,379,959.77 = 501,639,753.68/x
  3. Step 3: Cross multiply
    898,110,978.15x = 1,239,379,959.77 × 501,639,753.68
  4. Step 4: Simplify right side
    898,110,978.15x = 621,722,257,735,621,504
  5. Step 5: Solve for x
    x = 621,722,257,735,621,504/898,110,978.15
  6. Step 6: Final answer
    x = 692,255,492.76

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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.