Home / 711,941.40-982,479.51-389,651.31

Finding the Fourth Proportional to 711,941.40, 982,479.51 and 389,651.31

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Solution

The fourth proportional to 711,941.40, 982,479.51 and 389,651.31 is: 537,719.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    711,941.40 : 982,479.51 = 389,651.31 : x
  2. Step 2: Convert to fraction form
    711,941.40/982,479.51 = 389,651.31/x
  3. Step 3: Cross multiply
    711,941.40x = 982,479.51 × 389,651.31
  4. Step 4: Simplify right side
    711,941.40x = 382,824,428,119.66
  5. Step 5: Solve for x
    x = 382,824,428,119.66/711,941.40
  6. Step 6: Final answer
    x = 537,719.01

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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.