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Finding the Fourth Proportional to 711,810.99, 982,299.22 and 389,521.10

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Solution

The fourth proportional to 711,810.99, 982,299.22 and 389,521.10 is: 537,539.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    711,810.99 : 982,299.22 = 389,521.10 : x
  2. Step 2: Convert to fraction form
    711,810.99/982,299.22 = 389,521.10/x
  3. Step 3: Cross multiply
    711,810.99x = 982,299.22 × 389,521.10
  4. Step 4: Simplify right side
    711,810.99x = 382,626,274,185.49
  5. Step 5: Solve for x
    x = 382,626,274,185.49/711,810.99
  6. Step 6: Final answer
    x = 537,539.15

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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.