Home / 791,209.81-1,187,001.42-258,728.77

Finding the Fourth Proportional to 791,209.81, 1,187,001.42 and 258,728.77

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Solution

The fourth proportional to 791,209.81, 1,187,001.42 and 258,728.77 is: 388,154.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    791,209.81 : 1,187,001.42 = 258,728.77 : x
  2. Step 2: Convert to fraction form
    791,209.81/1,187,001.42 = 258,728.77/x
  3. Step 3: Cross multiply
    791,209.81x = 1,187,001.42 × 258,728.77
  4. Step 4: Simplify right side
    791,209.81x = 307,111,417,384.85
  5. Step 5: Solve for x
    x = 307,111,417,384.85/791,209.81
  6. Step 6: Final answer
    x = 388,154.21

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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.