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Finding the Fourth Proportional to 991,882.80, 1,484,713.80 and 711,946.80

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Solution

The fourth proportional to 991,882.80, 1,484,713.80 and 711,946.80 is: 1,065,687.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    991,882.80 : 1,484,713.80 = 711,946.80 : x
  2. Step 2: Convert to fraction form
    991,882.80/1,484,713.80 = 711,946.80/x
  3. Step 3: Cross multiply
    991,882.80x = 1,484,713.80 × 711,946.80
  4. Step 4: Simplify right side
    991,882.80x = 1,057,037,238,825.84
  5. Step 5: Solve for x
    x = 1,057,037,238,825.84/991,882.80
  6. Step 6: Final answer
    x = 1,065,687.64

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.