Home / 763,760.81-1,053,990.35-419,618.93

Finding the Fourth Proportional to 763,760.81, 1,053,990.35 and 419,618.93

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Solution

The fourth proportional to 763,760.81, 1,053,990.35 and 419,618.93 is: 579,074.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    763,760.81 : 1,053,990.35 = 419,618.93 : x
  2. Step 2: Convert to fraction form
    763,760.81/1,053,990.35 = 419,618.93/x
  3. Step 3: Cross multiply
    763,760.81x = 1,053,990.35 × 419,618.93
  4. Step 4: Simplify right side
    763,760.81x = 442,274,295,529.28
  5. Step 5: Solve for x
    x = 442,274,295,529.28/763,760.81
  6. Step 6: Final answer
    x = 579,074.35

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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.