Home / 766,707.77-1,148,587.66-428,723.32

Finding the Fourth Proportional to 766,707.77, 1,148,587.66 and 428,723.32

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Solution

The fourth proportional to 766,707.77, 1,148,587.66 and 428,723.32 is: 642,260.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    766,707.77 : 1,148,587.66 = 428,723.32 : x
  2. Step 2: Convert to fraction form
    766,707.77/1,148,587.66 = 428,723.32/x
  3. Step 3: Cross multiply
    766,707.77x = 1,148,587.66 × 428,723.32
  4. Step 4: Simplify right side
    766,707.77x = 492,426,314,906.23
  5. Step 5: Solve for x
    x = 492,426,314,906.23/766,707.77
  6. Step 6: Final answer
    x = 642,260.76

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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.