Home / 711,821.03-982,281.51-389,544.71

Finding the Fourth Proportional to 711,821.03, 982,281.51 and 389,544.71

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Solution

The fourth proportional to 711,821.03, 982,281.51 and 389,544.71 is: 537,554.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    711,821.03 : 982,281.51 = 389,544.71 : x
  2. Step 2: Convert to fraction form
    711,821.03/982,281.51 = 389,544.71/x
  3. Step 3: Cross multiply
    711,821.03x = 982,281.51 × 389,544.71
  4. Step 4: Simplify right side
    711,821.03x = 382,642,561,039.91
  5. Step 5: Solve for x
    x = 382,642,561,039.91/711,821.03
  6. Step 6: Final answer
    x = 537,554.45

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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.