Home / 711,810.71-982,298.87-389,520.83

Finding the Fourth Proportional to 711,810.71, 982,298.87 and 389,520.83

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Solution

The fourth proportional to 711,810.71, 982,298.87 and 389,520.83 is: 537,538.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    711,810.71 : 982,298.87 = 389,520.83 : x
  2. Step 2: Convert to fraction form
    711,810.71/982,298.87 = 389,520.83/x
  3. Step 3: Cross multiply
    711,810.71x = 982,298.87 × 389,520.83
  4. Step 4: Simplify right side
    711,810.71x = 382,625,864,291.36
  5. Step 5: Solve for x
    x = 382,625,864,291.36/711,810.71
  6. Step 6: Final answer
    x = 537,538.79

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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.