Home / 711,678.99-982,108.26-389,384.46

Finding the Fourth Proportional to 711,678.99, 982,108.26 and 389,384.46

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Solution

The fourth proportional to 711,678.99, 982,108.26 and 389,384.46 is: 537,345.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    711,678.99 : 982,108.26 = 389,384.46 : x
  2. Step 2: Convert to fraction form
    711,678.99/982,108.26 = 389,384.46/x
  3. Step 3: Cross multiply
    711,678.99x = 982,108.26 × 389,384.46
  4. Step 4: Simplify right side
    711,678.99x = 382,417,694,481.64
  5. Step 5: Solve for x
    x = 382,417,694,481.64/711,678.99
  6. Step 6: Final answer
    x = 537,345.77

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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.