Home / 1,077,420.80-1,617,880.80-724,001.60

Finding the Fourth Proportional to 1,077,420.80, 1,617,880.80 and 724,001.60

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Solution

The fourth proportional to 1,077,420.80, 1,617,880.80 and 724,001.60 is: 1,087,178.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,077,420.80 : 1,617,880.80 = 724,001.60 : x
  2. Step 2: Convert to fraction form
    1,077,420.80/1,617,880.80 = 724,001.60/x
  3. Step 3: Cross multiply
    1,077,420.80x = 1,617,880.80 × 724,001.60
  4. Step 4: Simplify right side
    1,077,420.80x = 1,171,348,287,809.28
  5. Step 5: Solve for x
    x = 1,171,348,287,809.28/1,077,420.80
  6. Step 6: Final answer
    x = 1,087,178.09

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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.