Home / 1,240,157.69-1,711,359.75-688,909.11

Finding the Fourth Proportional to 1,240,157.69, 1,711,359.75 and 688,909.11

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Solution

The fourth proportional to 1,240,157.69, 1,711,359.75 and 688,909.11 is: 950,662.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,240,157.69 : 1,711,359.75 = 688,909.11 : x
  2. Step 2: Convert to fraction form
    1,240,157.69/1,711,359.75 = 688,909.11/x
  3. Step 3: Cross multiply
    1,240,157.69x = 1,711,359.75 × 688,909.11
  4. Step 4: Simplify right side
    1,240,157.69x = 1,178,971,322,262.32
  5. Step 5: Solve for x
    x = 1,178,971,322,262.32/1,240,157.69
  6. Step 6: Final answer
    x = 950,662.43

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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.