Home / 711,975.46-982,488.28-389,623.29

Finding the Fourth Proportional to 711,975.46, 982,488.28 and 389,623.29

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Solution

The fourth proportional to 711,975.46, 982,488.28 and 389,623.29 is: 537,659.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    711,975.46 : 982,488.28 = 389,623.29 : x
  2. Step 2: Convert to fraction form
    711,975.46/982,488.28 = 389,623.29/x
  3. Step 3: Cross multiply
    711,975.46x = 982,488.28 × 389,623.29
  4. Step 4: Simplify right side
    711,975.46x = 382,800,316,040.04
  5. Step 5: Solve for x
    x = 382,800,316,040.04/711,975.46
  6. Step 6: Final answer
    x = 537,659.42

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1.5x scale

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.