Home / 1,152,183.76-1,590,012.38-642,886.13

Finding the Fourth Proportional to 1,152,183.76, 1,590,012.38 and 642,886.13

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Solution

The fourth proportional to 1,152,183.76, 1,590,012.38 and 642,886.13 is: 887,182.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,152,183.76 : 1,590,012.38 = 642,886.13 : x
  2. Step 2: Convert to fraction form
    1,152,183.76/1,590,012.38 = 642,886.13/x
  3. Step 3: Cross multiply
    1,152,183.76x = 1,590,012.38 × 642,886.13
  4. Step 4: Simplify right side
    1,152,183.76x = 1,022,196,911,212.54
  5. Step 5: Solve for x
    x = 1,022,196,911,212.54/1,152,183.76
  6. Step 6: Final answer
    x = 887,182.19

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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.