Home / 1,287,451.54-1,778,157.67-847,891.07

Finding the Fourth Proportional to 1,287,451.54, 1,778,157.67 and 847,891.07

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Solution

The fourth proportional to 1,287,451.54, 1,778,157.67 and 847,891.07 is: 1,171,060.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,287,451.54 : 1,778,157.67 = 847,891.07 : x
  2. Step 2: Convert to fraction form
    1,287,451.54/1,778,157.67 = 847,891.07/x
  3. Step 3: Cross multiply
    1,287,451.54x = 1,778,157.67 × 847,891.07
  4. Step 4: Simplify right side
    1,287,451.54x = 1,507,684,009,445.01
  5. Step 5: Solve for x
    x = 1,507,684,009,445.01/1,287,451.54
  6. Step 6: Final answer
    x = 1,171,060.78

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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.