Home / 765,103.81-1,055,826.20-442,807.45

Finding the Fourth Proportional to 765,103.81, 1,055,826.20 and 442,807.45

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Solution

The fourth proportional to 765,103.81, 1,055,826.20 and 442,807.45 is: 611,064.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    765,103.81 : 1,055,826.20 = 442,807.45 : x
  2. Step 2: Convert to fraction form
    765,103.81/1,055,826.20 = 442,807.45/x
  3. Step 3: Cross multiply
    765,103.81x = 1,055,826.20 × 442,807.45
  4. Step 4: Simplify right side
    765,103.81x = 467,527,707,265.19
  5. Step 5: Solve for x
    x = 467,527,707,265.19/765,103.81
  6. Step 6: Final answer
    x = 611,064.41

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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.