Home / 1,268,807.81-1,750,792.79-724,978.80

Finding the Fourth Proportional to 1,268,807.81, 1,750,792.79 and 724,978.80

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Solution

The fourth proportional to 1,268,807.81, 1,750,792.79 and 724,978.80 is: 1,000,378.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,268,807.81 : 1,750,792.79 = 724,978.80 : x
  2. Step 2: Convert to fraction form
    1,268,807.81/1,750,792.79 = 724,978.80/x
  3. Step 3: Cross multiply
    1,268,807.81x = 1,750,792.79 × 724,978.80
  4. Step 4: Simplify right side
    1,268,807.81x = 1,269,287,657,755.30
  5. Step 5: Solve for x
    x = 1,269,287,657,755.30/1,268,807.81
  6. Step 6: Final answer
    x = 1,000,378.19

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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.