Home / 1,298,190.72-1,947,470.37-399,707.13

Finding the Fourth Proportional to 1,298,190.72, 1,947,470.37 and 399,707.13

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Solution

The fourth proportional to 1,298,190.72, 1,947,470.37 and 399,707.13 is: 599,617.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,298,190.72 : 1,947,470.37 = 399,707.13 : x
  2. Step 2: Convert to fraction form
    1,298,190.72/1,947,470.37 = 399,707.13/x
  3. Step 3: Cross multiply
    1,298,190.72x = 1,947,470.37 × 399,707.13
  4. Step 4: Simplify right side
    1,298,190.72x = 778,417,792,352.74
  5. Step 5: Solve for x
    x = 778,417,792,352.74/1,298,190.72
  6. Step 6: Final answer
    x = 599,617.44

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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.