Home / 1,076,280.80-1,615,976.40-811,896.80

Finding the Fourth Proportional to 1,076,280.80, 1,615,976.40 and 811,896.80

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Solution

The fourth proportional to 1,076,280.80, 1,615,976.40 and 811,896.80 is: 1,219,018.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,076,280.80 : 1,615,976.40 = 811,896.80 : x
  2. Step 2: Convert to fraction form
    1,076,280.80/1,615,976.40 = 811,896.80/x
  3. Step 3: Cross multiply
    1,076,280.80x = 1,615,976.40 × 811,896.80
  4. Step 4: Simplify right side
    1,076,280.80x = 1,312,006,068,035.52
  5. Step 5: Solve for x
    x = 1,312,006,068,035.52/1,076,280.80
  6. Step 6: Final answer
    x = 1,219,018.37

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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.