Home / 1,209,140.80-1,668,628.32-692,884.48

Finding the Fourth Proportional to 1,209,140.80, 1,668,628.32 and 692,884.48

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Solution

The fourth proportional to 1,209,140.80, 1,668,628.32 and 692,884.48 is: 956,188.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,209,140.80 : 1,668,628.32 = 692,884.48 : x
  2. Step 2: Convert to fraction form
    1,209,140.80/1,668,628.32 = 692,884.48/x
  3. Step 3: Cross multiply
    1,209,140.80x = 1,668,628.32 × 692,884.48
  4. Step 4: Simplify right side
    1,209,140.80x = 1,156,166,665,816.47
  5. Step 5: Solve for x
    x = 1,156,166,665,816.47/1,209,140.80
  6. Step 6: Final answer
    x = 956,188.61

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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.