Home / 711,839.70-982,338.80-389,549.93

Finding the Fourth Proportional to 711,839.70, 982,338.80 and 389,549.93

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Solution

The fourth proportional to 711,839.70, 982,338.80 and 389,549.93 is: 537,578.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    711,839.70 : 982,338.80 = 389,549.93 : x
  2. Step 2: Convert to fraction form
    711,839.70/982,338.80 = 389,549.93/x
  3. Step 3: Cross multiply
    711,839.70x = 982,338.80 × 389,549.93
  4. Step 4: Simplify right side
    711,839.70x = 382,670,003,916.84
  5. Step 5: Solve for x
    x = 382,670,003,916.84/711,839.70
  6. Step 6: Final answer
    x = 537,578.90

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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.